Dielectric Cube Half Mirror / CSMH-30-550

Dielectric cube half mirrors consist of two right angle prisms. One of them is coated with dielectric multi-layer partial reflection coating on the hypotenuse face.
In stock
Part Number
CSMH-30-550
S$453.40
◦Half mirror divides input beam into reflectance and transmittance at a 1:1 ratio. A beamsplitter with R:T (1:1 ratio) is called “Half Mirror”.
◦Four surfaces of the cube are coated with multi-layer anti-reflection coatings.
◦The loss of input beam is minimized as there is no absorption from dielectric coating. However the reflection to transmission ratio of these dielectric cube half mirrors vary depending on wavelength, polarization and the incident angle of input beam.
More Information
Catalog Code W3015
RoHS Yes
CE No
Download Product's Datasheet
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
Attention ▶Input beam from the prism side is indicated by a “○”. Reflection and refraction over wavelength will differ when light input is applied from the opposite side of the prism.
▶The transmittance curves are based on actual measurements and may vary with manufacturing lots.
▶The surface flatness is the reflected wavefront distortion of the surface before coating.
▶Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
Specifications
MaterialBK7
Surface flatness of substrateλ/4
Beam Deviation<5′
CoatingHypotenuse surface ; Dielectric multilayer coating
Four surfaces ; Multilayer antireflection coating
Incident angle
Divergence ratio (reflectance 1:1
Polarization of the incidentUnpolarized light or 45-degrees Linear polarization or Circular polarization
Laser Damage Threshold0.3J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality (Scratch-Dig)20−10
Clear apertureCircle that inscribed in a square of 85% of the dimensions
A=B=C30mm
Wavelength Range400 - 700nm
Transmittance (Average P and S)Average 50±5%