Variable Beamsplitter/Attenuator is a combination of a polarization Beamsplitter cube (PBS) and a zero order half waveplate made of crystal quartz. Variable Beamsplitter/Attenuator is used to continuously vary the transmitted intensity of a linearly polarized beam by rotating the waveplate, which can achieve split ratios (T:R) of 1:99 to 95:1. It is widely used in holography, interferometry and other applications.
★ Continuously Variable Split Ratios (T:R) from 1:99 to 95:1
★ High Extinction Ratio Tp/Ts>1000:1
★ Zero Order Half Waveplate
★ Two M4 hole available for mounting
★ RoHS Compliant
| Diameter Tolerance | +0/-0.2mm |
| Surface Quality | 60/40 |
| Wavefront Distortion | <λ/4@632.8nm for cube, <λ/8@632.8nm for waveplate |
| Beam Deviation | <10 arc minutes |
| Variable Split Ratios (T:R) | 1:99-95:1 |
| Retardation Tolerance | λ/300 (Typical) |
| Extinction Ratio | Tp/Ts>1000:1 |
| AR Coating | R<0.25% per surface |
| Damage Threshold | >500mJ/cm2, 20ns, 20Hz, @1064nm |
