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Chromium Cube Half Mirrors

CSCH

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Chromium Cube Half Mirrors
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CSCH
Chromium cube half mirrors consist of two right angle prisms. One of them is coated with chromium (Cr) on the hypotenuse face. Half mirror divides input beam to reflectance and transmittance in 1:1. A beamsplitter of R:T=1:1 is called “Half Mirror”.
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Name Design wavelength Length Delivery Price Add to cart
i
Chromium Cube Half Mirror 20mm 400 - 700nm
CSCH-20-550 		400 - 700nm 20mm
2 weeks
$178.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 20mm
i
Chromium Cube Half Mirror 10mm 750 - 850nm
CSCH-10-800 		750 - 850nm 10mm
in stock
$128.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 750 - 850nm
A＝B＝C 10mm
i
Chromium Cube Half Mirror 40mm 400 - 700nm
CSCH-40-550 		400 - 700nm 40mm
6-12 weeks
$563.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 40mm
i
Chromium Cube Half Mirror 10mm 400 - 700nm
CSCH-10-550 		400 - 700nm 10mm
in stock
$119.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 10mm
i
Chromium Cube Half Mirror 25mm 400 - 700nm
CSCH-25-550 		400 - 700nm 25mm
in stock
$227.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 25mm
i
Chromium Cube Half Mirror 15mm 750 - 850nm
CSCH-15-800 		750 - 850nm 15mm
in stock
$158.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 750 - 850nm
A＝B＝C 15mm
i
Chromium Cube Half Mirror 50mm 400 - 700nm
CSCH-50-550 		400 - 700nm 50mm
6-12 weeks
$702.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 50mm
i
Chromium Cube Half Mirror 15mm 400 - 700nm
CSCH-15-550 		400 - 700nm 15mm
in stock
$148.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 15mm
i
Chromium Cube Half Mirror 30mm 400 - 700nm
CSCH-30-550 		400 - 700nm 30mm
2 weeks
$346.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 400 - 700nm
A＝B＝C 30mm
i
Chromium Cube Half Mirror 20mm 750 - 850nm
CSCH-20-800 		750 - 850nm 20mm
in stock
$188.00
Material BK7
Surface flatness of substrate λ/4
Beam Deviation ＜5′
Coating Hypotenuse surface ; Chromium
Four surfaces ; Multilayer antireflection coating
Incident angle 0°
Transmittance <br> (Average P and S) 28±5% (average with respect to wavelength.)
Divergence ratio <br> (reflectance : transmittance) 1 : 1
Laser Damage Threshold 0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality <br> (Scratch-Dig) 40-20
Wavelength range 750 - 850nm
A＝B＝C 20mm

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◦Four surfaces of the cube are coated with multi-layer anti-reflection coatings.
◦Approximately one third of the input beam is lost because of absorption of chromium coating on the hypotenuse. However these beamsplitters are not wavelength, polarization and incident angle of the input beam dependent and therefore provide a highly neutral reflectivity.
◦For cube beamsplitters, unlike plate beamsplitters, transmission beam deviations and ghosts rarely occur.