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Chromium Half-Mirror Plate Beamsplitters

PSCH

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Chromium Half-Mirror Plate Beamsplitters
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PSCH
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.
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Design wavelength
Diameter φD
Delivery Price Add to cart
details
PSCH-30C05-10W-800
750 - 850nm 30mm
in stock
SGD 266.50
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 5mm
Wedge angle W 1°±5′
details
PSCH-25.4C03-10-550
400 - 700nm 25.4mm
1-3 weeks
SGD 158.50
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 400 - 700nm
Diameter φD φ25.4mm
Thickness t 3mm
Parallelism ＜5″
details
PSCH-40C04-10-550
400 - 700nm 40mm
in stock
SGD 220.10
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 400 - 700nm
Diameter φD φ40mm
Thickness t 4mm
Parallelism ＜5″
details
PSCH-60C06-10-550
400 - 700nm 60mm
1-3 weeks
SGD 336.00
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 400 - 700nm
Diameter φD φ60mm
Thickness t 6mm
Wedge angle W ＜5″
details
PSCH-25.4C03-10-800
750 - 850nm 25.4mm
1-3 weeks
SGD 219.50
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 φ25.4mm
Thickness t 3mm
Parallelism ＜5″
details
PSCH-50C05-10-800
750 - 850nm 50mm
1-3 weeks
SGD 405.50
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 φ50mm
Thickness t 5mm
Parallelism ＜5″
details
PSCH-30C03-10-550
400 - 700nm 30mm
1-3 weeks
SGD 173.80
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 400 - 700nm
Diameter φD φ30mm
Thickness t 3mm
Parallelism ＜5″
details
PSCH-50C05-10-550
400 - 700nm 50mm
1-3 weeks
SGD 266.50
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 400 - 700nm
Diameter φD φ50mm
Thickness t 5mm
Wedge angle W ＜5″
details
PSCH-100C10-10-550
400 - 700nm 100mm
1-3 weeks
SGD 880.50
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 400 - 700nm
Diameter φD φ100mm
Thickness t 10mm
Parallelism ＜5″
details
PSCH-30C03-10-800
750 - 850nm 30mm
in stock
SGD 266.50
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″
details
PSCH-50C08-10W-800
750 - 850nm 50mm
1-3 weeks
SGD 405.50
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 φ50mm
Thickness t 8mm
Wedge angle W 1°±5′
details
PSCH-30C05-10W-550
400 - 700nm 30mm
1-3 weeks
SGD 173.80
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 400 - 700nm
Diameter φD φ30mm
Thickness t 5mm
Wedge angle W 1°±5′
details
PSCH-50C08-10W-550
400 - 700nm 50mm
1-3 weeks
SGD 266.50
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 400 - 700nm
Diameter φD φ50mm
Thickness t 8mm
Wedge angle W 1°±5′
details
PSCH-100C15-10W-550
400 - 700nm 100mm
1-3 weeks
SGD 880.50
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 400 - 700nm
Diameter φD φ100mm
Thickness t 15mm
Wedge angle W 1°±5′

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◦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.