Chromium Plate Half Mirror 30mm Diameter 750 - 850nm

PSCH-30C03-10-800

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Chromium plate half mirrors are plate beamsplitters that are coated with chromium (Cr) on the front surface of optical parallels or wedged substrates. The other surface is coated with multi-layer anti-reflection.

Details

◦Half mirror divides input beam into reflectance and transmittance ratio of 1:1. A beamsplitter of R:T=1:1 is called “Half Mirror”.
◦Approximately one third of the input beam is lost because of the absorption of chromium. However these beamsplitters do not depend on wavelength, polarization and angle of incidence of the input beam, and provide a highly neutral reflectivity.
◦Plate beamsplitters have beam deviations on transmission and ghost on rear surface reflections. Wedged substrates are used to prevent ghosting.

More Information

More Information
Name	Chromium Plate Half Mirror 30mm Diameter 750 - 850nm
Weight	0.0060kgs
Standard Coatings Available	No
Guide	Please contact our Sales Division for customized products. (Customized on size, wavelength or R:T, etc.) WEB Reference Catalog Code/W3802 For a guarantee in reflected wavefront error or transmitted wavefront error, please contact our Sales Division with your requests.
Remark	-
Attention	The beam deviation at transmission of a wedged beamsplitter is large compared to a one made of optical parallel. The amount of beam deviation of a beamsplitter depends on the thickness of the substrate, the wavelength or the angle of incidence of the input beam. Transmission curves are based on actual measurements and may vary with manufacturing lots. Surface flatness is the reflected wavefront distortion of the surface prior to coating. Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
Design wavelength	750 - 850nm
Image Label	Chromium Plate Half Mirror 30mm Diameter 750 - 850nm
Diameter φD	30mm
Material	BK7
Surface flatness	λ/10
Coating	Front surface ; Chromium Rear surfaces ; Multilayer antireflection coating
Incident angle	45°
Transmittance <br> (Average P and S)	30±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance)	1 : 1
Laser Damage Threshold	0.25J/cm² (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig)	40-20
Wavelength range	750 - 850nm
Diameter φD	φ30mm
Thickness t	3mm
Parallelism	＜5″

In stock

SKU

PSCH-30C03-10-800

£164.10

Chromium Plate Half Mirror 30mm Diameter 750 - 850nm

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