45° Polarizing Beam Splitter

PRODUCT CATEGORIES

INOUIRY

The 45° polarizing beam splitter uses an ultraviolet fused silica substrate and is a polarizing optical element that can be used to separate different polarization components (p-ray and s-ray) of incident light, transmitting p-ray and reflecting s-ray respectively. At 45° incident angle, the extinction ratio Tp/Ts at the transmission end is >200:1, and changes in the incident angle will cause a decrease in the extinction ratio.

Primarily used to separate S-polarization and P-polarization;
Incident at a 45° angle, the reflected light forms a 90° angle with the incident light;
Suitable for high power applications.

Technical parameters with 45° Polarizing Beamsplitter

Material:	UV-cured fused silica
Extinction Ratio:	Tp/Ts > 200:1
Dimensional Tolerance:	+0/-0.2 mm
Thickness Tolerance:	±0.2 mm
Transmitted Wavefront Distortion:	< λ/8 per 25mm@632.8 nm
Parallelism:	< 3 min
Transmission Parameters:	Tp > 95%, Ts < 0.5%
Reflection Parameters:	Rs > 99.5%, Rp < 5%
Coating:	Incident Angle 45° (must be adjusted to the optimal angle during use), first side coated with dielectric film, second side uncoated
Damage Threshold:	> 5j/cm², 20 nanoseconds, 20 Hz, @ 1064 nm

spectral curve with 45° Polarizing Beamsplitter

Inventory Parameters with 45° Polarizing Beam Splitter

Design Wavelength (nm)	Extinction Ratio	Angle of Incidence	Diameter (mm)	Thickness (mm)
355nm	＞200:1	45°	12.7mm; 25.4mm; 50.8mm	3mm; 6.35mm
532nm	＞200:1	45°	12.7mm; 25.4mm; 50.8mm	3mm; 6.35mm
633nm	＞200:1	45°	12.7mm; 25.4mm; 50.8mm	3mm; 6.35mm
780nm	＞200:1	45°	12.7mm; 25.4mm; 50.8mm	3mm; 6.35mm
1064nm	＞200:1	45°	12.7mm; 25.4mm; 50.8mm	3mm; 6.35mm