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Nd:YAG Laser Beamsplitters

This Beamsplitter splits average polarized laser beam into two beams separated by 90° from each other. It is designed for average polarization: R=(Rs+Rp)/2 and T=(Ts+Tp)/2.

 

Material
UV grade fused silica or BK7 glass
S1 Surface Flatness
λ/10 at 633 nm
S1 Surface Quality
20-10 scratch & dig (MIL-PRF-13830B)
S2 Surface Flatness
λ/10 at 633 nm
S2 Surface Quality
20-10 scratch & dig (MIL-PRF-13830B)
Diameter Tolerance
+0.00 mm-0.12 mm
Thickness Tolerance
±0.25
Parallelism
30arcsec
Chamfer
0.3 mm at 45° typical

 

Coating
Technology
Electron beam multilayer dielectric
Adhesion and Durability
Per MIL-C-675A. Insoluble in lab solvents
Clear Aperture
Exceeds central 85% of diameter
Damage Threshold
>2J/cm2, 8 nsec pulse, 1064nm typical for BK7 substrates
>5J/cm2, 8 nsec pulse, 1064nm typical for UVFS substrates
Angle of Incidence
45±3 degrees
Back side antireflection coated
R<0.5%