ZnSe Beam Splitter

10.6 µm | 97% Reflectance | 0° AOI

  • Holding 1" Zinc Selenide PR 97%
1 2
Diameter
Thickness
$250.00
$250.00
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R = 50% ±2% @ 10.6um @ 45° AOI P-Pol

Optimized for 50/50 splitting for P polarization. Optic transmits in the visible for easy beam alignment.

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Technical Specifications

Physical Specifications
Material Laser Grade Zinc Selenide (ZnSe)
Diameter Tolerance +0.0 / -0.10 mm
Thickness Tolerance ±0.10 mm
Flatness λ/2 @ 632.8nm
Parallelism < 1 arcmin
Surface Quality 40-20 S-D
Edge Finish Fine Ground
Spectral Specifications
%T @ 10.6µm @ 0° 3% ±1%
%R @ 10.6µm @ 0° 97% ±1%
Reflection curve for ZnSe 97% CO2 laser beam splitter at 10.6µm

Frequently Asked Questions (FAQ)

What is a 97% beam splitter used for?


A 97% beam splitter is commonly used as a partial reflector, output coupler, beam sampler, or feedback optic in CO2 laser systems. The optic reflects most of the incident laser power while transmitting a small controlled percentage of the beam for monitoring or diagnostic purposes.

What does the optional wedge do?


The optional 8 arcmin wedge helps separate unwanted secondary reflections from the primary beam path. This reduces ghost reflections and etalon effects that can occur with parallel optical surfaces.

What angle of incidence and polarization is this optic designed for?


This beam splitter is optimized for 0° angle of incidence (normal incidence) at 10.6µm. At normal incidence, polarization is irrelevant because S-polarized and P-polarized light exhibit identical optical behavior under these conditions.

What is the transmission of this beam splitter?


The optic is designed for approximately 3% transmission and 97% reflection at 10.6 µm.