Laser Optics Dichroic Mirrors Beam Splitters Glass Beam Splitters ZnSe Beam Splitters

Beam Splitters

A beam splitter is an optical component that is used to split a single incoming light beam into two or more separate beams. Wavelength Opto-Electronic design and manufacture ZnSe beam splitters at 9.4µm and 10.6µm wavelengths which are ideal for your CO2 laser applications, as well as non-polarizing glass plate and glass cube beam splitters.

Customization

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Part NumberWavelength (nm)MaterialDimension (mm)Thickness (mm)AOIReflectivity
BSPN-355-0.5-45351-355Fused Silica12.73.045°50%
BSPN-532-0.5-45515-532N-BK712.73.045°50%
BSPN-633-0.5-45633N-BK712.73.045°50%
BSPN-795-0.5-45780-795N-BK712.73.045°50%
BSPN-1070-0.5-451053-1070N-BK712.73.045°50%
BSPN-355-1-45351-355Fused Silica25.43.045°50%
BSPN-532-1-45515-532N-BK725.43.045°50%
BSPN-633-1-45633N-BK725.43.045°50%
BSPN-795-1-45780-795N-BK725.43.045°50%
BSPN-1070-1-451053-1070N-BK725.43.045°50%
BSPN-355-2-45351-355Fused Silica50.83.045°50%
BSPN-532-2-45515-532N-BK750.83.045°50%
BSPN-633-2-45633N-BK750.83.045°50%
BSPN-795-2-45780-795N-BK750.83.045°50%
BSPN-1070-2-451053-1070N-BK750.83.045°50%
BSCN-420-700-10420-700N-BK710.010.045°50%
BSCN-532-10532N-BK710.010.045°50%
BSCN-633-10633N-BK710.010.045°50%
BSCN-1200-1600-101200-1600N-BK710.010.045°50%
BSCN-420-700-0.5420-700N-BK712.712.745°50%
BSCN-532-0.5532N-BK712.712.745°50%
BSCN-633-0.5633N-BK712.712.745°50%
BSCN-1200-1600-0.51200-1600N-BK712.712.745°50%
BSCN-420-700-20420-700N-BK720.020.045°50%
BSCN-532-20532N-BK720.020.045°50%
BSCN-633-20633N-BK720.020.045°50%
BSCN-1200-1600-201200-1600N-BK720.020.045°50%
BSCN-420-700-2420-700N-BK725.425.445°50%
BSCN-532-2532N-BK725.425.445°50%
BSCN-633-2633N-BK725.425.445°50%
BSCN-1200-1600-21200-1600N-BK725.425.445°50%
BSZ-0.5-3-10%R-PIS10600/9400ZnSe12.73.045°10%
BSZ-1-3-27%R-PIS10600/9400ZnSe25.43.045°27%
BSZ-1-3-50%R-PIS10600/9400ZnSe25.43.045°50%
BSZ-1.5-3-50%R-PIS10600/9400ZnSe38.13.045°50%
BSZ-2-5-50%R-PIS10600/9400ZnSe50.85.045°50%

A beam splitter is typically a glass plate or cube that has been coated with dielectric or metal film to reflect a portion of the incoming light while allowing the rest to pass through. In most cases, the structure and the coating film in the beam splitter determine the beam splitter’s properties and functionality. 

There are different types of beam splitter: the dichroic filter separates different wavelengths from a broadband beam; non-polarizing beam splitter will split the beam into two beams with similar polarization but with different or equal power, where the power ratio depends on the coating design; and polarizing beam splitter will split beams into S and P beams respectively.

Non-Polarizing Plate Beam Splitters – BSPN seriesNon-Polarizing Cube Beam Splitters – BSCN seriesZnSe Beam Splitters – BSZ Series

Beam Splitters 1

The common glass beam splitter is used to split the laser beam. The performance of beam splitters is mainly dependent on the coating specifications.

Material: Fused Silica, N-BK7
Dimension Tolerance: +0.0/-0.2mm
Thickness Tolerance: ±0.2mm
Clear Aperture: >90%
Surface Quality: 60/40 scratch and dig
Flatness: <λ/4 @ 632.8nm
Beam Deviation: <3 arcmin
T/R Tolerance: ±5%Coating (AOI=45°): Side1 – Non-polarizing beamsplitter coating; Side2 – AR coating
Damage Threshold: >3J/cm2 , 20ns, 20Hz @ 1064nm

Beam Splitters 3

With non-polarizing beam splitter coating on hypotenuse face, this series of cube beam splitters provide 50:50 split ratio independently on the input beam polarization.

Material: N-BK7
Dimension Tolerance: ±0.2mm
Clear Aperture: >90%
Surface Quality: 60/40 scratch and dig
Flatness: <λ/4 @ 632.8nm
Beam Deviation: <3 arcmin
T/R Tolerance: ±5%
Coating (AOI=45°): Non-polarizing beamsplitter coating on hypotenuse face and AR coating on all entrances
Damage Threshold: >100mJ/cm2 , 20ns, 20Hz @ 1064nm

The transmission and reflection of the light depend upon various parameters such as the incident angle, state of polarization, and wavelength of the input beam. There is a substantial difference in the transmittance and reflectance values of s and p polarization at a 45° incident angle, so the ZnSe beam splitters designed are for this angle.

Diameter Tolerance: +0/-0.13mm
Thickness: ±0.25mm
Surface Flatness: λ/4 per 1’’ Dia@632.8nm
Surface Quality: 60-40 S-D

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