Output couplers and beam splitters have a special coating to reflect a defined percentage of the incident light and transmit the remaining part. The reverse side is generally AR coated at 10.6 µm.
Specifications:
- Diameter: + 0.0 mm; - 0.2 mm
- Thickness: ± 0.25 mm
- Wedge: < 3 arc min
- Surface figure: typ. λ /20 at 10.6 µm (depending on diameter/thickness ratio)
- Surface quality: 40-20 per MIL-O-1380A
- Clear aperture: 85 % of diameter
- Laser damage threshold: depending on beam diameter, typ. 3000 W/mm (CW CO2 laser)
(3 kW per mm of beam diameter 1/e²)
Output Couplers/Partial Reflectors (Type PZ):
Output couplers are available in both planar and curved form.
- Angle of incidence: 0°
- Reflectivity tolerance: Data upon request
Beam Splitter (Type BSZ):
Beam splitters are typically used at an angle of 45° and optimized for each polarization.
- Angle of incidence: 45°
- Reflectivity tolerance: Data upon request
- Polarization independent beam splitters are available.
Beam Combiners (Type BCZ):
Beam combiners are used at an angle of 45° to add pilot beams to the beam path. They offer a maximum reflection for typical wavelengths in the visible range and simultaneously a maximum transmission at 10.6 µm.
- Angle of incidence: 45°
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