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High-Power PBS cubes

High-Power PBS CubeHigh power beamsplitter cube consists of a pair of precision right-angle prisms optically contacted together. No cement is used. The lack of cement at the interface means that the laser damage threshold is maximized. The four faces are antireflection coated with a multilayer dielectric coating to minimize surface reflection losses.


- Laser Damage Threshold: > 15J/cm2 @ 1064nm 20ns, 20Hz

- Epoxy-Free Optically Contacted at Beamsplitter Interface

- Excellent for High Energy Applications High-Power PBS Cube

- Reflected and transmitted beams separated by 90°

  Laser Damage Threshold Test

High-Power PBS Cube Specifications:


UV Fused Silica

Laser Damage Threshold

> 15 J/cm2 @ 1064nm, 20ns, 20Hz

Wavefront Distortion

≤ λ/4 at 632.8 nm over the clear aperture

Clear Aperture

Central diameter, >90% of dimension

Surface Quality

20-10 Scratch-Dig


Tp > 97%, Rs >99.5%

Extinction Ratio

Tp/Ts > 1000:1

Transmitted Beam Deviation

< 5 arc min

Reflected Beam Deviation

90° ± 5 arc min

Dimensions Tolerance

± 0.20 mm

Antireflection Coating

Multilayer coating, R < 0.25% per surface

Standard Wavelength

Narrow band:

355nm, 532nm, 632.8nm, 808nm, 980nm,

1064nm, 1310nm, 1550nm


450-650nm, 650-900nm,

900-1200nm, 1200-1600nm

Standard Dimension

6.35x6.35x6.35mm, 10x10x10mm, 12.7x12.7x12.7mm, 15x15x15mm, 20x20x20mm, 25.4x25.4x25.4mm,

Ordering Information:  PBS-HP-Size-Wavelength