# Ronar-Smith® Beam Expanders

Ronar-Smith® beam expanders demand the highest quality in beam broadening and collimation without compromising on the expanded beam quality. We value safety as much as we do and you can be assured that all our beam expanders are subjected to rigorous testing prior to market sales. All our fixed and zoom beam expanders are telescopic by nature and require a collimated beam input while delivering an expanded collimated beam at the output.

*G type : Galilean design without internal focus

*Don’t limit what you see.* Customization may be available for this product. Let us know your specifications in the RFQ form. You may also browse our manufacturing capabilities.

## Products

## Descriptions

## Specifications

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## Applications

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## Request for Quotation

Part Number | Wavelength (nm) | Magnification | Type | Input CA (mm) | Output CA (mm) | Mounting Thread | Max. Outer Dia (mm) | Total Length (mm) | Max. Input Beam Dia (1/e2) (mm) |
---|---|---|---|---|---|---|---|---|---|

BXZ-532-1-4X-D4 *NEW* | 532 | 1-4X | Manual Zoom | 12.0 | 18.0 | M30x1 | 18.0 | 155.0 | 4.0 |

BXZ-1064-1-4X-D6 *NEW* | 1064 | 1-4X | Manual Zoom | 12.0 | 30.0 | M30x1 | 30.0 | 135.0 | 6.0 |

BXZ-1064-1-4X-G-MOT-WC | 1064 | 1-4X | Motorized Zoom | 27.0 | 48.0 | - | 70.0 | 252.0 | 12.0 |

BXZ-2000-1-3X | 2000 | 1-3X | Manual Zoom | 10.0 | 20.0 | M36x1 | 41.0 | 136.9 | 7.0@1X 5.0@3X |

BXZ-1980-1-3X-CON | 1980 | 1-3X | Manual Zoom | 21.0 | 39.0 | M53x0.75 | 59.0 | 161.0 | 10.0 |

BEX-2000-1.5X | 2000 | 1.5X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-2X | 2000 | 2X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-3X | 2000 | 3X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-4X | 2000 | 4X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-5X | 2000 | 5X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-6X | 2000 | 6X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-7X | 2000 | 7X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-8X | 2000 | 8X | Fixed | 8.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-2000-10X | 2000 | 10X | Fixed | 6.0 | 31.0 | M30x1 | 46.0 | 85.0 | - |

BEX-1550-2.5X | 1550 | 2.5X | Fixed | 8.0 | 23.0 | M22x0.75 | 34.0 | 65.2 | - |

BEX-1550-3X | 1550 | 3X | Fixed | 8.0 | 23.0 | M22x0.75 | 34.0 | 70.6 | - |

BEX-1550-7X | 1550 | 7X | Fixed | 10.0 | 25.0 | - | 32.0 | 75.0 | - |

BEX-1550-8X | 1550 | 8X | Fixed | 10.0 | 30.0 | M22x0.75 | 43.0 | 102.5 | 3.0 |

BEX-1550-10X | 1550 | 10X | Fixed | 10.0 | 58.0 | - | 65.0 | 98.0 | - |

BEX-1550-20X | 1550 | 20X | Fixed | 7.0 | 49.0 | M22x0.75 | 60.0 | 120.0 | - |

BEX-1064-1X-MOT | 1064 | 1X | Motorized Zoom | 14.0 | 18.0 | - | - | 95.0 | 8.0 |

BEX-1064-1X-V2 | 1064 | 1X | Fixed | 18.0 | 20.0 | M28x1 | 33.0 | 63.8 | - |

BEX-1064-1.2X | 1064 | 1.2X | Fixed | 16.0 | 23.0 | M22x0.75 | 29.0 | 54.9 | - |

BEX-1064-1.5X | 1064 | 1.5X | Fixed | 15.5 | 23.0 | M22x0.75 | 25.0 | 44.5 | - |

BEX-1064-1.5X-C | 1064 | 1.5X | Fixed | 12.0 | 24.0 | C-mount | 35.0 | 67.9 | - |

BEX-1064-2X1i | 1064 | 2X | Fixed | 15.0 | 23.0 | M22x0.75 | 29.0 | 50.0 | - |

BEX-1064-2X-C | 1064 | 2X | Fixed | 8.0 | 24.0 | C-mount | 35.0 | 67.9 | - |

BEX-1064-2.5X1 | 1064 | 2.5X | Fixed | 11.0 | 23.0 | M22x0.75 | 29.0 | 84.8 | - |

BEX-1064-2.8X | 1064 | 2.8X | Fixed | 9.0 | 24.0 | M13x0.75 | 30.0 | 83.5 | - |

BEX-1064-3Xi | 1064 | 3X | Fixed | 10.0 | 20.0 | M22x0.75 | 26.0 | 60.0 | - |

BEX-1064-3X-C | 1064 | 3X | Fixed | 10.0 | 24.0 | C-mount | 35.0 | 67.9 | - |

BEX-1064-4Xi | 1064 | 4X | Fixed | 10.0 | 22.0 | M22x0.75 | 29.0 | 81.1 | - |

BEX-1064-5X-D8 | 1064 | 5X | Fixed | 13.5 | 36.0 | M30x1 | 47.0 | 113.0 | 8.0 |

BEX-1064-5X | 1064 | 5X | Fixed | 10.0 | 23.0 | M22x0.75 | 29.0 | 72.0 | - |

BEX-1064-5Z1 | 1064 | 5X | Fixed | 10.0 | 32.0 | M30x1 | 46.0 | 80.0 | - |

BEX-1064-6Xi | 1064 | 6X | Fixed | 5.0 | 22.0 | M22x0.75 | 29.0 | 71.2 | - |

BEX-1064-7X | 1064 | 7X | Fixed | 6.0 | 23.0 | M22x0.75 | 29.0 | 76.4 | - |

BEX-1064-8Xi | 1064 | 8X | Fixed | 10.0 | 23.0 | M22x0.75 | 29.0 | 77.3 | - |

BEX-1064-10X-V1 | 1064 | 10X | Fixed | 8.0 | 22.0 | M22x0.75 | 29.0 | 83.5 | - |

BEX-1064-13X-D4 | 1064 | 13X | Fixed | 12.0 | 68.0 | M30x1 | 81.0 | 198.0 | 4.0 |

BEX-1064-15X | 1064 | 15X | Fixed | 7.5 | 28.0 | M30x1 | 45.0 | 99.1 | - |

BEX-1064-15X-D4 | 1064 | 15X | Fixed | 12.0 | 68.0 | M30x1 | 81.0 | 198.0 | 4.0 |

BEX-1064-20X | 1064 | 20X | Fixed | 8.0 | 28.0 | M22x0.75 | 45.0 | 91.2 | - |

BEX-1064-40X | 1064 | 40X | Fixed | 8.0 | 128.0 | M30x1 | 157.0 | 188.7 | - |

BEX-633-3X | 633 | 3X | Fixed | 10.0 | 22.0 | M22x0.75 | 33.0 | 63.7 | - |

BEX-633-5X | 633 | 5X | Fixed | 8.0 | 23.0 | M22x0.75 | 33.0 | 110.0 | - |

BEX-633-8X | 633 | 8X | Fixed | 11.0 | 23.5 | M28x0.55 | 35.0 | 117.5 | - |

BEX-633-10X | 633 | 10X | Fixed | 8.0 | 23.0 | M22x0.75 | 30.0 | 146.0 | - |

BEX-633-20X | 633 | 20X | Fixed | 8.0 | 76.0 | M22x0.75 | 30.0 | 198.0 | - |

BEX-633-40X | 633 | 40X | Fixed | 8.0 | 100.0 | M22x0.75 | 40.0 | 246.0 | - |

BEX-633-50X | 633 | 50X | Fixed | 10.0 | 81.0 | M22x0.75 | 30.0 | 304.0 | - |

BEX-532-1X | 532 | 1X | Fixed | 15.0 | 18.0 | M30x1 | 36.0 | 63.0 | - |

BEX-532-1.5X | 532 | 1.5X | Fixed | 10.0 | 23.0 | M22x0.75 | 30.0 | 68.8 | - |

BEX-532-2X2-V1 | 532 | 2X | Fixed | 8.0 | 23.0 | M22x0.75 | 33.0 | 61.5 | - |

BEX-532-3Xi | 532 | 3X | Fixed | 8.0 | 23.0 | M22x0.75 | 30.0 | 83.0 | - |

BEX-532-4Xi | 532 | 4X | Fixed | 6.0 | 23.0 | M22x0.75 | 30.0 | 83.0 | - |

BEX-532-5Xi | 532 | 5X | Fixed | 8.0 | 24.0 | M22x0.75 | 30.0 | 81.5 | - |

BEX-532-6X2 | 532 | 6X | Fixed | 5.0 | 17.0 | - | 25.0 | 70.6 | - |

BEX-532-10Xi | 532 | 10X | Fixed | 8.0 | 24.0 | M22x0.75 | 30.0 | 85.3 | - |

BEX-532-15X | 532 | 15X | Fixed | 6.0 | 32.0 | M30x1 | 30.0 | 85.0 | - |

BEX-532-20X | 532 | 20X | Fixed | 6.0 | 38.0 | M30x1 | 40.0 | 95.2 | - |

BEX-532-25X-D1 | 532 | 25X | Fixed | 10.0 | 36.0 | M40x0.75 | 50.0 | 153.0 | 1.0 |

BEX-450-20X | 450 | 20X | Fixed | 6.0 | 31.0 | M43x0.5 | 46.0 | 97.0 | 1.4 |

BEX-450-10X | 450 | 10X | Fixed | 9.0 | 28.0 | M43x0.5 | 46.0 | 85.6 | 2.5 |

BEX-450-7X | 450 | 7X | Fixed | 20.0 | 26.0 | - | 38.0 | 128.0 | 2.0 |

BEX-450-5X | 450 | 5X | Fixed | 8.0 | 28.0 | M43x0.5 | 46.0 | 78.0 | 2.0 |

BEX-450-3X | 450 | 3X | Fixed | 8.0 | 18.0 | M27x0.75 | 28.0 | 52.5 | 3.0 |

BEX-450-2X | 450 | 2X | Fixed | 8.0 | 18.0 | M27x0.75 | 28.0 | 52.5 | 3.0 |

BEX-450-1.5X | 450 | 1.5X | Fixed | 8.0 | 18.0 | M43x0.5 | 28.0 | 52.5 | 5.0 |

BEX-405-1.5X | 405 | 1.5X | Fixed | 8.0 | 26.0 | M30x1 | 46.0 | 62.3 | - |

BEX-405-2X | 405 | 2X | Fixed | 8.0 | 26.0 | M30x1 | 46.0 | 62.3 | - |

BEX-405-3X-V1 | 405 | 3X | Fixed | 8.0 | 18.0 | M22x0.75 | 28.0 | 52.5 | - |

BEX-405-5X | 405 | 5X | Fixed | 8.0 | 28.0 | M30x1 | 46.0 | 78.0 | - |

BEX-405-7X-V1 | 405 | 7X | Fixed | 8.0 | 26.0 | M30x1 | 36.0 | 64.0 | - |

BEX-405-10X | 405 | 10X | Fixed | 9.0 | 28.0 | M30x1 | 46.0 | 85.6 | - |

BEX-405-20X | 405 | 20X | Fixed | 6.0 | 31.0 | M30x1 | 46.0 | 77.0 | - |

BEX-355-1X | 355 | 1X | Fixed | 15.0 | 18.0 | M30x1 | 36.0 | 61.0 | - |

BEX-355-1.5X | 355 | 1.5X | Fixed | 6.0 | 24.0 | M30x1 | 46.0 | 76.5 | - |

BEX-355-2X-V1 | 355 | 2X | Fixed | 8.0 | 28.0 | M30x1 | 46.0 | 82.0 | 7.0 |

BEX-355-2X2 | 355 | 2X | Fixed | 6.0 | 23.0 | M22x0.75 | 33.0 | 57.0 | - |

BEX-355-2.5X | 355 | 2.5X | Fixed | 12.0 | 23.4 | M30x1 | 36.0 | 61.0 | - |

BEX-355-3X-D1 | 355 | 3X | Fixed | 4.0 | 5.0 | M13x0.5 | 16.0 | 38.9 | 1.2 |

BEX-355-3X | 355 | 3X | Fixed | 6.0 | 24.0 | M30x1 | 46.0 | 77.3 | - |

BEX-355-4X-V1 | 355 | 4X | Fixed | 8.0 | 28.0 | M30x1 | 46.0 | 82.0 | - |

BEX-355-5X | 355 | 5X | Fixed | 6.0 | 28.0 | M30x1 | 46.0 | 73.5 | - |

BEX-355-7X | 355 | 7X | Fixed | 6.0 | 28.0 | M30x1 | 46.0 | 88.1 | - |

BEX-355-7X-D1 | 355 | 7X | Fixed | 4.0 | 9.6 | M14x0.5 | 16.0 | 54.0 | 1.0 |

BEX-355-8X | 355 | 8X | Fixed | 6.0 | 28.0 | M30x1 | 46.0 | 84.0 | - |

BEX-355-10X-V1 | 355 | 10X | Fixed | 9.0 | 28.0 | M30x1 | 46.0 | 97.0 | 2.0 |

BEX-355-10X-D0.8 | 355 | 10X | Fixed | 8.0 | 18.0 | M22x0.75 | 28.0 | 71.5 | 0.8 |

BEX-355-10X-D1 | 355 | 10X | Fixed | 4.0 | 13.6 | M18x0.5 | 20.0 | 50.0 | 1.0 |

BEX-355-15X-D1 | 355 | 15X | Fixed | 4.0 | 19.0 | M24x0.5 | 27.0 | 69.0 | 1.0 |

BEX-355-20X-V1 | 355 | 20X | Fixed | 10.0 | 28.0 | M30x1 | 46.0 | 97.0 | - |

BEX-355-30X | 355 | 30X | Fixed | 8.0 | 36.0 | M30x1 | 45.0 | 173.0 | 1.0 |

BEX-266-1.5X | 266 | 1.5X | Fixed | 8.0 | 24.0 | M22x0.75 | 30.0 | 63.7 | - |

BEX-266-2X | 266 | 2X | Fixed | 8.0 | 24.0 | M22x0.75 | 30.0 | 73.0 | - |

BEX-266-3X | 266 | 3X | Fixed | 10.0 | 23.0 | M22x0.75 | 30.0 | 68.7 | - |

BEX-266-5X | 266 | 5X | Fixed | 10.0 | 23.0 | M22x0.75 | 30.0 | 69.6 | - |

BEX-266-10X | 266 | 10X | Fixed | 6.0 | 23.0 | M22x0.75 | 30.0 | 95.6 | - |

BEX-266-20X | 266 | 20X | Fixed | 1.5 | 30.0 | M22x0.75 | 30.0 | 96.0 | - |

BEX-3.9-14X | 3900 | 14X | Fixed | 11.0 | 49.0 | M30x1 | 60.0 | 113.0 | 3.0 |

BEX-9.4-1X | 9400 | 1X | Fixed | 16.0 | 18.0 | - | 20.0 | 44.1 | - |

BEX-9.4-2X | 9400 | 2X | Fixed | 16.5 | 23.0 | - | 20.0 | 51.0 | - |

BEX-9.4-2.5X | 9400 | 2.5X | Fixed | 13.0 | 21.0 | - | 20.0 | 56.0 | - |

BEX-9.4-3X1 | 9400 | 3X | Fixed | 10.0 | 22.0 | - | 20.0 | 32.5 | - |

BEX-9.4-3X2 | 9400 | 3X | Fixed | 18.0 | 30.0 | - | 20.0 | 61.0 | - |

BEX-9.4-4Z1 | 9400 | 4X | Fixed | 10.0 | 20.0 | - | 20.0 | 69.0 | - |

BEX-9.4-5Z1 | 9400 | 5X | Fixed | 13.0 | 23.0 | - | 20.0 | 37.0 | - |

BEX-10.6-1X | 10600 | 1X | Fixed | 16.0 | 18.0 | - | 20.0 | 27.9 | - |

BEX-10.6-2Z1-V1 | 10600 | 2X | Fixed | 10.7 | 23.0 | M22x0.75 | 32.0 | 54.5 | - |

BEX-10.6-2Z3i-V1 | 10600 | 2X | Fixed | 15.5 | 28.0 | M22x0.75 | 36.0 | 59.0 | - |

BEX-10.6-2.5Z2i | 10600 | 2.5X | Fixed | 16.0 | 21.0 | - | 20.0 | 60.0 | - |

BEX-10.6-3Z2i | 10600 | 3X | Fixed | 10.0 | 20.0 | M33x0.75 | 40.0 | 54.9 | - |

BEX-10.6-3Z5i | 10600 | 3X | Fixed | 16.0 | 36.0 | M22x0.75 | 28.0 | 59.0 | - |

BEX-10.6-3Z6i | 10600 | 3X | Fixed | 15.5 | 28.0 | M22x0.75 | 28.0 | 59.0 | - |

BEX-10.6-3.5Z | 10600 | 3.5X | Fixed | 10.5 | 16.0 | M16x0.75 | 28.0 | 71.0 | - |

BEX-10.6-4Z1i | 10600 | 4X | Fixed | 10.0 | 20.0 | M33x0.75 | 40.0 | 69.8 | - |

BEX-10.6-4Z2i | 10600 | 4X | Fixed | 15.0 | 28.0 | M22x0.75 | 28.0 | 71.0 | - |

BEX-10.6-5Z1i | 10600 | 5X | Fixed | 13.0 | 23.0 | M22x0.75 | 30.0 | 70.0 | - |

BEX-10.6-6Zi | 10600 | 6X | Fixed | 11.0 | 26.0 | M33x0.75 | 40.0 | 54.9 | - |

BEX-10.6-6Z1i | 10600 | 6X | Fixed | 11.0 | 36.0 | M22x0.75 | 32.0 | 50.0 | - |

BEX-10.6-8Z1 | 10600 | 8X | Fixed | 13.0 | 33.0 | M22x0.75 | 36.0 | 48.1 | - |

BEX-10.6-8Z2 | 10600 | 8X | Fixed | 10.5 | 23.4 | M22x0.75 | 28.0 | 57.4 | - |

BEX-10.6-10Z1i | 10600 | 10X | Fixed | 10.0 | 36.0 | M22x0.75 | 28.0 | 61.0 | - |

BEX-10.6-12X | 10600 | 12X | Fixed | 10.0 | 36.0 | M22x0.75 | 44.0 | 75.5 | - |

BEX-10.6-15X | 10600 | 15X | Fixed | 10.0 | 40.0 | M22x0.75 | 36.0 | 60.0 | - |

BEX-10.6-20X | 10600 | 20X | Fixed | 9.0 | 52.0 | M25x0.75 | 20.0 | 27.9 | - |

BEX-10.6-30X | 10600 | 30X | Fixed | 16.0 | 97.0 | M41x0.75 | 108.0 | 145.0 | 3.0 |

BEX-10.6-1.5Z | 10600 | 1.5X | Fixed | 12.0 | 14.0 | M22x0.75 | 28.0 | 71.0 | - |

BEX-10.6-2Z4 | 10600 | 2X | Fixed | 10.0 | 15.0 | M22x0.75 | 36.0 | 67.3 | - |

BEX-10.6-2.5Z | 10600 | 2.5X | Fixed | 10.0 | 15.0 | M22x0.75 | 30.0 | 70.0 | - |

BEX-10.6-2.5Z1 | 10600 | 2.5X | Fixed | 10.0 | 16.0 | M22x0.75 | 32.0 | 76.0 | - |

BEX-10.6-3Z1 | 10600 | 3X | Fixed | 10.0 | 16.0 | M22x0.75 | 44.0 | 75.0 | - |

BEX-10.6-3.3Z1 | 10600 | 3.3X | Fixed | 10.0 | 15.0 | M22x0.75 | 44.0 | 121.7 | - |

BEX-10.6-3Z3T | 10600 | 3X | Fixed | 10.0 | 16.0 | M16x0.75 | 20.0 | 37.0 | - |

BEX-10.6-3.5Z | 10600 | 3.5X | Fixed | 10.5 | 16.0 | M22x0.75 | 44.0 | 125.0 | - |

BEX-10.6-4Z | 10600 | 4X | Fixed | 8.0 | 15.0 | M30x1 | 50.0 | 109.2 | - |

BEX-10.6-5Z | 10600 | 5X | Fixed | 10.0 | 16.0 | M30x1 | 53.0 | 118.4 | - |

BEX-10.6-6Z2 | 10600 | 6X | Fixed | 10.0 | 15.0 | M30x1 | 65.0 | 144.0 | - |

BET0101.5 | 10600 | 1.5X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 75.2 | - |

BET0102A | 10600 | 2X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 75.6 | - |

BET0102.5 | 10600 | 2.5X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 75.6 | - |

BET0103A | 10600 | 3X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 69.9 | - |

BET0104A | 10600 | 4X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 75.2 | - |

BET0105A | 10600 | 5X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 72.1 | - |

BET0106A | 10600 | 6X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 72.1 | - |

BET0107A | 10600 | 7X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 79.1 | - |

BET0108A | 10600 | 8X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 77.4 | - |

BET0109A | 10600 | 9X | Fixed | 23.0 | 28.0 | M30x1 | 39.6 | 88.0 | - |

BET0110A | 10600 | 10X | Fixed | 18.0 | 30.0 | M30x1 | 37.6 | 88.0 | - |

BET0101.5-WC | 10600 | 1.5X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0102A-WC | 10600 | 2X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0102.5-WC | 10600 | 2.5X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0103A-WC | 10600 | 3X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0104A-WC | 10600 | 4X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0105A-WC | 10600 | 5X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0106A-WC | 10600 | 6X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0107A-WC | 10600 | 7X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0108A-WC | 10600 | 8X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BET0110A-WC | 10600 | 10X | Water Cool | 23.0 | 28.0 | M32x0.75 | 50.0 | 72.0 | - |

BXZ-1550-1-4X | 1550 | 1X - 4X | Manual Zoom | 23.0 | 28.0 | - | - | 126.8 | 13.0@1X 12.0@4X |

BXZ-1550-2-8X-D6 | 1550 | 2X - 8X | Manual Zoom | 15.0 | 55.0 | M32x0.75 | 87.0 | 218.0 | 11.0@3X 6.0@8X |

BXZ-1064-1-3X-A1 | 1064 | 1X - 3X | Manual Zoom | 23.0 | 38.0 | - | - | 131.3 | 10.0@1X 8.0@3X |

BXZ-1064-1-4X | 1064 | 1X - 4X | Manual Zoom | 23.0 | 28.0 | - | - | 176.0 | 3.0@1X 2.0@4X |

BXZ-1064-1-4X-G-48OP | 1064 | 1X - 4X | Manual Zoom | 22.0 | 48.0 | M72x1 | 82.0 | 241.0 | 13.0@1X 9.0@4X |

BXZ-1064-1-8V | 1064 | 1X - 8X | Manual Zoom | 12.0 | 33.0 | M51x0.75 | 54.0 | 162.0 | 5.0@1X 3.0@8X |

BXZ-1064-2-4X-G7 | 1064 | 2X - 4X | Manual Zoom | 12.0 | 34.0 | - | - | 187.5 | 7.0@2X 6.5@4X |

BXZ-1064-2-8X-A | 1064 | 2X - 8X | Manual Zoom | 16.0 | 60.0 | M34x0.75 | - | 212.7 | 8.0@2X 5.0@8X |

BXZ-1064-2-8V | 1064 | 2X - 8X | Manual Zoom | 12.0 | 33.0 | M51x0.75 | 54.0 | 158.5 | 5.0@2X 3.0@8X |

BXZ-1064-2-8X-G-V2 | 1064 | 2X - 8X | Manual Zoom | 12.0 | 32.0 | M53 x 0.75 | 64.0 | 220.0 | 6.0@2X 2.5@8X |

BXZ-1064-2-10X | 1064 | 2X - 10X | Manual Zoom | 23.0 | 35.0 | - | - | 172.0 | 8.0@2X 3.0@10X |

BXZ-1064-1-3X-G | 1064 | 1X - 3X | Manual Zoom | 16.0 | 26.0 | - | - | 120.0 | 9.0@1X 5.0@3X |

BXZ-1064-0.5-2X-D10-CON | 1064 | 0.5X - 2X | Manual Zoom | 18.0 | 32.0 | M51x0.75 | 55.5 | 150.0 | 10.0 |

BXZ-980-1-3X-A1-CON | 980 | 1X - 3X | Manual Zoom | 19.0 | 37.0 | M55x0.75 | 60.0 | 141.5 | 10.0 |

BXZ-532-1-3X | 532 | 1X - 3X | Manual Zoom | 23.0 | 23.0 | - | - | 110.0 | 6.0@1X 5.5@3X |

BXZ-532-1-4X | 532 | 1X - 4X | Manual Zoom | 23.0 | 28.0 | - | - | 141.8 | 6.0@1X 4.0@4X |

BXZ-532-1-8V | 532 | 1X - 8X | Manual Zoom | 12.0 | 33.0 | M51x0.75 | 54.0 | 162.0 | 3.0@1X 3.0@8X |

BXZ-532-2-6X | 532 | 2X - 6X | Manual Zoom | 23.0 | 11.0 | - | - | 89.0 | 3.0@2X 1.0@6X |

BXZ-532-2-8V | 532 | 2X - 8X | Manual Zoom | 12.0 | 33.0 | M51x0.75 | 54.0 | 158.5 | 5.0@2X 2.0@8X |

BXZ-532-2-10X | 532 | 2X - 10X | Manual Zoom | 23.0 | 35.0 | - | - | 172.0 | 8.0@2X 3.0@10X |

BXZ-532-1-3X-G | 532 | 1X - 3X | Manual Zoom | 23.0 | 26.0 | - | - | 120.0 | 9.0@1X 5.0@3X |

BXZ-532-1-5X-G3 | 532 | 1X - 5X | Manual Zoom | 23.0 | 28.0 | - | - | 246.0 | 6.0@1X 3.0@5X |

BXZ-532-2-8X-G-V2 | 532 | 2X - 8X | Manual Zoom | 12.0 | 32.0 | M53x0.75 | 64.0 | 220.0 | 6.0@2X 2.5@8X |

BXZ-355-1-3X | 355 | 1X - 3X | Manual Zoom | 23.0 | 38.0 | - | - | 131.0 | 6.0@1X 5.0@3X |

BXZ-355-1-4X | 355 | 1X - 4X | Manual Zoom | 23.0 | 28.0 | - | - | 138.0 | 5.0@1X 4.0@4X |

BXZ-355-1-8V | 355 | 1X - 8X | Manual Zoom | 12.0 | 33.0 | M51x0.75 | 54.0 | 162.0 | 3.5@1X 2.5@8X |

BXZ-355-2-4X-G7 | 355 | 2X - 4X | Manual Zoom | 12.0 | 34.0 | - | - | 179.5 | 7.0@2X 6.0@4X |

BXZ-355-2-8V | 355 | 2X - 8X | Manual Zoom | 12.0 | 33.0 | M51x0.75 | 54.0 | 158.5 | 4.0@2X 2.0@8X |

BXZ-355-2-8X-QA | 355 | 2X - 8X | Manual Zoom | 23.0 | 60.0 | - | - | 200.8 | 6.0@2X 4.0@8X |

BXZ-355-2-10X | 355 | 2X - 10X | Manual Zoom | 23.0 | 35.0 | - | - | 172.0 | 8.0@2X 3.0@10X |

BXZ-355-1-3X-G | 355 | 1X - 3X | Manual Zoom | 23.0 | 26.0 | - | - | 120.0 | 9.0@1X 5.0@3X |

BXZ-355-2-8X-G-V2 | 355 | 2X - 8X | Manual Zoom | 12.0 | 32.0 | M53x0.75 | 64.0 | 220.0 | 6.0@2X 2.5@8X |

BXZ-266-1-7X | 266 | 1X - 7X | Manual Zoom | 23.0 | 32.0 | - | - | 191.8 | 5.0@1X 3.0@7X |

BXZ-266-2-7X | 266 | 2X - 7X | Manual Zoom | 23.0 | 32.0 | - | - | 180.3 | 5.0@2X 3.0@7X |

BXZ-257-1-5X-G4 | 257 | 1X -5X | Manual Zoom | 12.0 | 28.0 | M54x0.75 | 65.0 | 199.0 | 4.0 |

BXZ-9.4-0.25-2X | 9400 | 0.25X - 2X | Manual Zoom | 23.0 | 38.0 | - | - | 119.9 | 10.0@0.5X 10.0@2X |

BXZ-9.4-0.3-1X | 9400 | 0.3X - 1X | Manual Zoom | 23.0 | 14.0 | - | - | 82.3 | 9.0@0.3X 10.0@1X |

BXZ-9.4-0.5-3X | 9400 | 0.5X - 3X | Manual Zoom | 23.0 | 38.0 | - | - | 138.0 | 10.0@0.5X 8.0@3X |

BXZ-9.4-1-3X | 9400 | 1X - 3X | Manual Zoom | 23.0 | 30.0 | - | - | 126.4 | 9.0@1X 6.0@3X |

BXZ-9.4-1-4X | 9400 | 1X - 4X | Manual Zoom | 23.0 | 48.0 | - | - | 140.9 | 10.0@1X 8.0@4X |

BXZ-9.4-2-8X | 9400 | 2X - 8X | Manual Zoom | 23.0 | 36.0 | - | - | 172.0 | 6.0@2X 3.0@8X |

BXZ-9.4-0.5-3X-G8 | 9400 | 0.5X - 3X | Manual Zoom | 23.0 | 58.0 | - | - | 383.0 | 8.0@0.5X 5.0@3X |

BXZ-9.4-1-4X-G7 | 9400 | 1X - 4X | Manual Zoom | 23.0 | 49.0 | - | - | 252.0 | 7.0@1X 3.0@4X |

BXZ-9.6-1-4X-V2 | 9600 | 1X -4X | Manual Zoom | 17.0 | 38.0 | M55 x 0.75 | - | 160.0 | - |

BXZ-10.6-0.25-2X | 10600 | 0.25X - 2X | Manual Zoom | 23.0 | 30.0 | M50 x1 | 50.0 | 120.0 | 10.0@0.5X 10.0@2X |

BXZ-10.6-0.5-3X | 10600 | 0.5X - 3X | Manual Zoom | 23.0 | 38.0 | - | - | 138.0 | 10.0@0.5X 8.0@3X |

BXZ-10.6-1-3X | 10600 | 1X - 3X | Manual Zoom | 18.0 | 30.0 | - | - | 126.4 | 9.0@1X 6.0@3X |

BXZ-10.6-1-4X-B | 10600 | 1X - 4X | Manual Zoom | 18.0 | 48.0 | M66 x 0.75 | - | 140.9 | 10.0@1X 8.0@4X |

BXZ-10.6-1-4X-V2 | 10600 | 1X - 4X | Manual Zoom | 17.0 | 38.0 | M55 x 0.75 | - | 160.0 | - |

BXZ-10.6-2-6X-A | 10600 | 2X - 6X | Manual Zoom | 23.0 | 28.0 | - | - | 213.0 | 3.5@2X 3.0@6X |

BXZ-10.6-2-8X | 10600 | 2X - 8X | Manual Zoom | 23.0 | 36.0 | - | - | 182.0 | 5.0@2X 3.0@8X |

BXZ-10.6-1-4X-G | 10600 | 1X - 4X | Manual Zoom | 23.0 | 28.0 | - | - | 150.0 | 6.0@1X 4.0@4X |

BXZ-10.6-1.5-3X-G9 | 10600 | 1.5X - 3X | Manual Zoom | 23.0 | 38.0 | - | - | 114.5 | 7.0@1.5X 9.0@3X |

BXZ-1550-1-4X-MOT | 1550 | 1X - 4X | Motorized Zoom | 23.0 | 28.0 | - | - | 277.0 | 13.0@1X 12.0@4X |

BXZ-1550-0.5-5X-MOT | 1550 | 0.5X - 5X | Motorized Zoom | 23.0 | 40.0 | - | - | 225.9 | 4.0@0.5X 2.0@5X |

BXZ-1064-0.5-2X-D10-MOT | 1064 | 0.5X - 2X | Motorized Zoom | 18.0 | 32.0 | - | - | 150.0 | 10.0 |

BXZ-1064-1-3X-MOT | 1064 | 1X - 3X | Motorized Zoom | 23.0 | 28.0 | - | - | 179.2 | 8.0@1X 6.0@3X |

BXZ-1064-1-8X-MOT | 1064 | 1X - 8X | Motorized Zoom | 23.0 | 32.0 | - | - | 159.0 | 6.0@1X 3.0@8X |

BXZ-532-1-4X-G-MOT | 532 | 1X - 4X | Motorized Zoom | 23.0 | 18.0 | - | - | 168.0 | 5.0@1X 2.0@4X |

BXZ-532-1-8X-MOT | 532 | 1X - 8X | Motorized Zoom | 23.0 | 32.0 | - | - | 159.0 | 6.0@1X 2.0@8X |

BXZ-355-1-8X-MOT | 355 | 1X - 8X | Motorized Zoom | 23.0 | 32.0 | - | - | 136.0 | 4.0@1X 2.0@8X |

BXZ-266-1-3X-G | 266 | 1 - 3X | Manual Zoom | 16.0 | 26.0 | M46x1 | 50.0 | 120.0 | 6.0@1X 3.0@4X |

BXZ-266-1-7X-MOT | 266 | 1X - 7X | Motorized Zoom | 23.0 | 32.0 | - | - | 136.0 | 5.0@1X 3.0@7X |

BXZ-257-1-5X-G4-MOT | 257 | 1X - 5X | Motorized Zoom | 12.0 | 28.0 | - | 50.0 | 207.0 | 7.0@1X 4.0@5X |

BXZ-9.4-0.25-2X-MOT | 9400 | 0.25X - 2X | Motorized Zoom | 23.0 | 32.0 | - | - | 130.0 | 12.0 |

BXZ-9.4-2-8X-MOT | 9400 | 2X - 8X | Motorized Zoom | 23.0 | 36.0 | - | - | 190.0 | 6.0@2X 3.0@8X |

BXZ-10.6-1-3X-MOT | 10600 | 1X - 3X | Motorized Zoom | 23.0 | 38.0 | - | - | 199.0 | 8.0@1X 6.0@3X |

BXZ-10.6-1-4X-MOT | 10600 | 1X - 4X | Motorized Zoom | 23.0 | 47.0 | - | - | 189.0 | 10.0@1X 8.0@4X |

BXZ-10.6-2-6X-MOT | 10600 | 2X - 6X | Motorized Zoom | 23.0 | 28.0 | - | - | 213.0 | 3.5@2X 3.0@6X |

BXZ-10.6-2-8X-MOT | 10600 | 2X - 8X | Motorized Zoom | 23.0 | 30.0 | - | - | 190.0 | 5.0@2X 3.0@8X |

What makes our beam expander products unique is the broad wavelength input that we carry and the customization services that we provide for customers who need specific requirements in their industrial and production line. The parameters that we are able to provide customization include wavelength-specific filtering, anti-reflection coating, magnification factor selection, input/output clear aperture, and maximum beam intensity.

**Fixed Beam Expander (BEX)**

Beam expander in laser system development is utilized for calibrating various elements. The diameter of the laser beam at the laser system output is adapted to the required diameter at the input of the objective lens. The beam expander is also primarily used in laser-material processes.

Fixed beam expanders are also designed for specific beam expansion applications such as laser engraving. They also feature anti-reflection coatings and high transmissivity to maximize the efficiency of the beam expansion and reduce losses. The disadvantage lies in the fixed magnification factor and applications that require tuning of the output beam size are unable to perform.

**Manual Zoom Beam Expander (BXZ)**

Zoom Beam Expander accounts for the short-fall of fixed beam expander by allowing the user to tune manually to the required magnification factor, depending on various processes that is required. These beam expanders are also designed for high power applications where magnification adjustments may be required.

The concept of zoom beam expander works on the internal translation stages and focusing mechanisms to adjust and account for the changes in magnification continuously. It also takes laser divergence into consideration and performs relative adjustments without affecting the overall housing length.

**Motorized Zoom Beam Expander (BXZ-MOT)**

Motorized Zoom Beam Expander accounts for the short-fall of fixed beam expander by allowing the user to tune automatically to the required magnification factor, depending on various processes that is required. These beam expanders are also designed for high power applications where magnification adjustments may be required.

The concept of zoom beam expander works on the internal translation stages and focusing mechanisms to adjust and account for the changes in magnification continuously. It also takes laser divergence into consideration and performs relative adjustments without affecting the overall housing length.

**CO2 Beam Expander (UniBet & MiniBet)**

UniBET series beam expanders are developed for higher power (>100w) CO2 laser without water cool. It has a consistent outer dimension and connecting thread M30x1.

MiniBET series are smaller in size, all have the same external diameter of 20mm, total range ranging from around 28mm to 70mm only. Thread M16x0.75 and it is widely applied in a compact CO2 laser system.

**CO2 Water Cool Beam Expander (BET-WC)**

A laser beam expander is designed to increase the diameter of a collimated output beam. It is used in applications such as laser scanning, interferometer, and remote sensing. BET-WC Series water cool beam expanders are developed for even higher power (>200W) CO_{2} lasers with consistency in outer dimension and water pipe connection.

**Fixed Beam Expander (BEX)**

**Magnification:** 1x – 50x**Beam Divergence:** Adjustable**Design Type:** Galilean**Pointing Stability:** < 1 mrad**Wavelength:** 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

**Manual****Zoom Beam Expander (BXZ)**

**Magnification:** Continuous Zoom**Beam Divergence:** Adjustable**Pointing Stability:** <1 mrad**Operational Type:** Manual**Wavelength:** 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

**Motorized Zoom Beam Expander (BXZ-MOT)**

**Adjustment Speed:** per magnification 5 sec**Baud Rate:** 9600 bit/sec**Power Input:** 9V**Interface:** RS232 and USB**Pointing Stability:** <1 mrad**Wavelength:** 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

**CO2 Beam Expander - UniBet**

**Collimation of CO _{2 }Laser:** >100W

**1.5x – 10x**

Fixed Magnifications:

Fixed Magnifications:

**Design:**Galilean

**Adjustable:**Divergence

**CO2 Beam Expander - MiniBet**

**Collimation of CO _{2 }Laser:** >100W

**1.5x – 6x**

Fixed Magnifications:

Fixed Magnifications:

**Design:**Galilean

**Adjustable:**Divergence

**CO2 Water Cool Beam Expander (BET-WC)**

**Collimation of CO _{2 }Laser:** >200W

**1.5x – 10x**

Fixed Magnifications:

Fixed Magnifications:

**Design:**Galilean

**Adjustable:**Divergence

# Laser Beam Expanders: Keplerian vs. Galilean Beam Expanders and Other Configurations

Author: Bryan Ng – Marketing Manager

Editor: Qu Yingli – R&D Director

Published on:

Last edited:

## 1. Introduction to Laser Beam Expanders

Laser beam expanders are critical optical devices that manipulate and enhance laser beams in various applications. They are pivotal in extending the beam’s width, collimation, and divergence, making them invaluable tools in research, manufacturing, telecommunications, and medical fields.

There are several configurations of laser beam expanders and they can be grouped differently. For instance, the Keplerian and Galilean beam expander design is one way of classifying laser beam expanders. Let’s first look at the difference between these two designs before we delve into other configurations.

## 2. Galilean Beam Expanders vs. Keplerian Beam Expanders

. The Keplerian and Galilean beam expanders classification is based on the lens or lens group combination structure.

### 2.1 Keplerian Beam Expander Design and Applications

As shown in Figure 1, the Keplerian beam expander design involves a positive lens pair with focal positions coincident with each other. The total length between the lenses is the sum of the two focal lengths. The applications for the Keplerian beam expander design are:

- Interferometry and other applications that require using spatial filtering in the intermediate focal point. This filter will block out any light that is not in the desired spatial mode.
- Low-power laser applications. Due to the intermediate focal point, Keplerian beam expander can only be used in lower-power laser applications such as alignment, measurements, scanning, size gauging, etc.

### 2.2 Galilean Beam Expander Design and Applications

As shown in figure 1, the Galilean beam expander design makes use of a negative and a positive lens pair with their focal position coincident with each other and the total length between the lenses is the sum of the two focal lengths.

Galilean beam expanders can be used for a majority of laser applications, including high-power laser applications such as laser marking, soldering, cutting, etc.

## 3. Other Laser Beam Expanders Configurations

Now we understand the difference between Keplerian and Galilean beam expander design, let’s look into other different configurations. A laser beam expander can also be classified based on the viewing angle, whether the magnification is fixed or varying. For instance, a laser beam expander is either in a fixed or zoomed magnification. Additionally, based on its tuning method, the zoomed laser beam expanders can also be classified as manual or motorized zoomed configurations.

Another type of classification is based on the refraction or reflection being applied. So, a laser beam expander can be classified as refractive (in most cases) or a reflective beam expander. There are laser beam expanders designed for CO_{2} laser applications.

## 4. Fixed and Zoomed Laser Beam Expanders

### 4.1 Fixed Laser Beam Expanders

In a fixed beam expander, lenses can only be tuned to adjust the divergence angle of the laser beam. Compared with a zoomed beam expander, the fixed magnification beam expander features a more compact size and lighter weight.

We offer fixed beam expanders (BEX series) with the following specifications:

Magnification: 1x – 50x

Beam Divergence: Adjustable

Design Type: Galilean/Keplerian

Pointing Stability: < 1 mrad

Wavelength: 266 / 355 / 405 / 532 / 633 / 1064 / 1550 / 2000 / 9400 / 10600nm

### 4.2 Zoomed Laser Beam Expanders

The concept of zoomed laser beam expanders works on the internal translation stages and focusing mechanisms to adjust and account for the changes in magnification continuously. It also considers laser divergence and performs relative adjustments without affecting the overall housing length.

Manual/motorized zoomed laser beam expanders have variable magnification in a certain range. This flexibility in magnification makes the beam expanders useful for applications that need controllable focused beam size. We offer zoomed beam expanders (BXZ and BXZ-MOT series) with the following specifications:

Magnification: 0.25x – 10x

Divergence Adjustability: Yes

Angle of Incidence: 0 ± 0.06°

Pointing Stability: < 1 mrad

Wavelength: 257 / 355 / 532 / 1064 / 1550 / 1940 / 2800 / 9400 / 10600nm

### 4.2.1 Manual Zoomed Laser Beam Expanders

Figure 4 shows a typical manual adjusted zoomed beam expander. There are two adjusting rings, one is to set magnifications whereas another is to set the focusing and divergence angle of the laser beam.

### 4.2.2 Motorized Zoomed Laser Beam Expanders

Following the global trend in automation, Wavelength Opto-Electronic came up with a new series of automatic/motorized laser beam expanders. The unique design of an integrated printed circuit board provides an integrated communication port, a memory-based calibration function, and a high accuracy of 10μm.

## 5. Reflective Laser Beam Expanders

To reduce the thermal effects in high-power lasers as well as to eliminate the chromatic aberration in ultrafast lasers, we came up with new modules based on reflective focusing optics. It could be used as a stand-alone module, or integrated with other transmission-based beam expanders.

## 6. CO_{2} Laser Beam Expanders

CO_{2} laser beam expanders are developed to work with higher power (>100w) CO_{2} laser. We have developed below CO_{2} laser beam expanders for various CO_{2} laser applications:

**CO _{2} Laser Beam Expander (UniBet Series)**

Collimation of CO_{2 }Laser: >100W

Fixed Magnifications: 1.5x – 10x

Design: Galilean

Adjustable: Divergence

**CO _{2} Laser Beam Expander (MiniBet Series)**

Collimation of CO_{2 }Laser: >100W

Fixed Magnifications: 1.5x – 6x

Design: Galilean

Adjustable: Divergence

**CO _{2} Laser Water Cool Beam Expander (BET-WC Series)**

Collimation of CO_{2 }Laser: >200W

Fixed Magnifications: 1.5x – 10x

Design: Galilean

Adjustable: Divergence

## 7. Conclusion

Wavelength Opto-Electronic designs and manufactures our in-house Ronar-Smith® brand of laser beam expanders, available in different magnification configurations and types of Galilean as well as Keplerian. With our state-of-the-art production facilities and design capabilities, you can be assured that our Ronar-Smith® laser beam expanders demand the highest quality in beam broadening and collimation without compromising on the expanded beam quality.

We value safety as much as we do and you can be assured that all our beam expanders are subjected to rigorous testing before market sales. All our fixed and zoom laser beam expanders are telescopic by nature and require a collimated beam input while delivering an expanded collimated beam at the output. All designs come with a detailed specification table and operation manual.

## Enquire Now

## FAQ

### Can you widen a laser beam?

Yes, a laser beam can become wider or narrower by a laser beam expander The magnification of the laser beam expander is decided by the focal length ratio of the divergent and collimated lens inside. When the laser beam in the exit side of the beam expander, the laser beam size will be decreased.

### How do laser beam expanders work?

A Laser beam expander is made up of two groups of lenses: a divergent lens and a converging lens. The diverging lens expands the input beam and the converging lens then collimates the divergent beam to be parallel. Thus the input laser beam size can be increased. The magnification of a laser beam expander is equal to the focal length ratio of the converging/collimating lens and the diverging lens.

There are two main types of beam expanders: Galilean and Keplerian. The main difference between these two types of laser beam expander is in the diverging lens: A Galilean type uses a negative lens as the diverging lens whereas a Keplerian type applies a positive lens as the diverging lens. For both types, the focal points position of the diverging and converging lens are coincident.

### What is the difference between Galilean and Keplerian laser beam expanders?

Galilean beam expanders do not have an internal focus, which makes them safer for high-power applications. Whereas Keplerian beam expanders have internal focus which can be used for spatial filtering.

## FAQ

A laser beam expander is an optical device used to increase the diameter of a laser beam. The purpose of a beam expander is to reduce the divergence of the laser beam, which is the tendency of the beam to spread out as it travels. By increasing the diameter of the beam, the beam expander reduces the divergence, allowing the beam to travel further without spreading out too much.

A typical laser beam expander consists of two lenses placed a certain distance apart, with the distance between the lenses being equal to the sum of their focal lengths. The first lens diverges the laser beam to a larger diameter, and the second lens then collimates the enlarged beam to be parallel. The amount of expansion is determined by the ratio of the focal lengths of the two lenses.

Laser beam expanders are commonly used in laser machining, laser cutting, and laser marking applications, where a precise and focused laser beam is required. They can also be used in scientific research, such as in laser spectroscopy or microscopy.

Here are the general steps for using a laser beam expander:

- Set up the laser beam expander: Mount the laser beam expander onto a stable platform or optical bench. Make sure the input and output ports are properly aligned and secured.
- Connect the laser: Connect the laser source to the input port of the beam expander. Ensure that the laser is properly focused and aligned.
- Adjust the beam expander: Depending on the type of beam expander, adjust the optical elements to expand or collimate the laser beam. Some beam expanders have adjustable lenses or mirrors, while others may require the use of fixed optics.
- Check the beam profile: Use a beam profiler or other measuring tool to check the spatial profile and divergence of the expanded beam. Adjust the beam expander as necessary to achieve the desired beam quality.
- Use the expanded beam: Once the beam expander is properly set up, use the expanded beam for your desired application, such as laser cutting, welding, or marking.

It’s important to note that laser safety should always be a top priority when working with lasers and laser beam expanders. Always wear appropriate protective eyewear and follow all safety guidelines and regulations.