Laser-Optics-Diffractive-Optical-Elements-DOE

Diffractive Optical Element (DOE)

  • Beam Splitter
  • Beam Shaper

Part NumberWavelength (nm)Dia (mm)Thickness (mm)Separation AngleNo. of Spots
DOE-355-1x335525.43≤ 5˚1x3
DOE-355-1x535525.43≤ 5˚1x5
DOE-355-1x635525.43≤ 5˚1x6
DOE-355-1x835525.43≤ 5˚1x8
DOE-532-1x353225.43≤ 5˚1x3
DOE-532-1x553225.43≤ 5˚1x5
DOE-532-1x653225.43≤ 5˚1x6
DOE-532-1x853225.43≤ 5˚1x8
DOE-1064-1x3106425.43≤ 5˚1x3
DOE-1064-1x5106425.43≤ 5˚1x5
DOE-1064-1x6106425.43≤ 5˚1x6
DOE-1064-1x8106425.43≤ 5˚1x8

The collimated laser light is incident onto an array (1 x N or M x N) of Beam Splitter DOE to split the input beam into N beams. The N output beams make some separation angle with the Beam Splitter DOE and there exists the desired zero-order beam for an odd number of beams (N). The focusing lenses are often used to achieve the output at the desired working distance.

Beam Splitter DOE
Material: Fused Silica
Beam Mode: SM or MM
Separation Angle: ≤ 5°
Transmission Efficiency:  ̴ 100%Overall Efficiency ̴  74- 85%
Uniformity (Contrast): < 1-3%
Zero-Order: relative to the incident beam<0.5-1%
Type: Window
Coating: AR/AR @ 355nm, 532nm, 1064nm

 

Part NumberWavelength (nm)F-theta EFL (mm)Dimension (mm)Input Beam Dia(mm)Flat Tope Beam Size (µm)
DOE-SCAN-1064-254C106425416 x 16 x 34.5116
DOE-SCAN-1064-163106416316 x 16 x 35.0118
DOE-SCAN-532-33053233016 x 16 x 33.0120

This set up comprises a laser source, Beam Shaper DOE, scan system/lens, and a working surface. The light passed through the Beam Shaper DOE distributes the Gaussian beam energy into a uniform intensity of either a circular or rectangular top-hat profile.

Material: Fused Silica
Beam Mode: SM or TEM ₀₀ with M²<1.5
Transmission Efficiency:  ̴ 100%
Overall Efficiency:  ̴ 90-95%
Shape: Circular, Rectangular
Type: Window
Coating: AR/AR @ 532nm, 1064nm

File name : Application-Note-DOE-DOE-selection.pdf

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