OPTICS

Non-polarizing Cube Half Mirrors

NPCH

Half mirrors have an even 1:1 ratio of reflection and transmission in both linear polarized light and normal light source.

Catalogue
Optics & Optical Coatings
  • The reflection to transmission ratio is 1:1 regardless of the polarization condition from the input beam.
  • Depending on polarization, the reflection to transmission ratio of these products does not vary.
  • The laser lines listed correspond to various laser wavelengths.
  • Narrowband multi-layer AR coatings are applied to the four surfaces of the cube.
  • These cubes afe designed for a single wavelenght because the effective bandwidth of a non-polarizing coating is narrow.
Key Specifications
MaterialBK7, Synthetic fused silica
Surface flatness of substrateλ/4
Beam Deviation<5′
CoatingHypotenuse Surface: Dielectric multi-layer nonpolarizing coating
Four Surfaces: Multi-layer anti-reflection coating
Incident angle0°
Divergence ratio
(reflectance : transmittance)		1 : 1
Laser Damage Threshold0.3J/cm2
(Laser pulse width 10ns, repetition frequency 20Hz)
Surface Quality (Scratch−Dig)20–10
Clear aperture85% of Circle to actual dimension