Cube Half Mirror

Beamsplitters Selection Guide

Product Type	NPCH	HBCH	CSCH	CSMH
Product Name	Non-polarizing Cube Half Mirror	Hybrid Cube Half Mirror	Chromium Cube Half Mirror	Dielectric Cube Half Mirror
Material	BK7　Synthetic fused silica	BK7	BK7	BK7
Surface Flatness of Substrate	λ/4	λ/4	λ/4	λ/4
Beam Deviation	＜5′	＜5′	＜5′	＜5′
Coating	Hypotenuse surface; Dielectric multilayer coating Four surfaces; Multilayer antireflection coating	Hypotenuse surface; Hybrid coating (dielectric and metallic multilayer coating) Four surfaces; Multilayer antireflection coating	Hypotenuse surface; Chromium Four surfaces; Multilayer antireflection coating	Hypotenuse surface; Dielectric multilayer coating Four surfaces; Multilayer antireflection coating
Incident Angle	0°	0°	0°	0°
Transmittance	-	-	28±5％ (average with respect to wavelength)	-
Divergence Ratio (reflectance : transmittance)	1:1	1:1	1:1	1:1
Polarization Condition of Incident Beam	-	-	-	Unpolarized light or 45-degrees Linear polarization or Circular polarization
Laser Damage Threshold	0.3J/cm² Laser pulse width: 10ns, repetition frequency 20Hz	0.3J/cm² Laser pulse width: 10ns, repetition frequency 20Hz	0.3J/cm² Laser pulse width: 10ns, repetition frequency 20Hz	0.3J/cm² Laser pulse width: 10ns, repetition frequency 20Hz
Surface Quality (Scratch-Dig)	20 － 10	40 － 20	40 － 20	20 － 10
Clear Aperture	Circle that inscribed in a square of 85% of the dimensions (Circle inscribed in a square of 80% of the dimensions, in case of 5 and 7mm)	Circle that inscribed in a square of 85% of the dimensions	Circle that inscribed in a square of 85% of the dimensions	Circle that inscribed in a square of 85% of the dimensions (Circle inscribed in a square of 80% of the dimensions, in case of 5 and 7mm)
Product Image
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Outline Drawing