Broadband thin film polarizers separate the s- and p-polarization components in broad region at 70° angle of incidence (AOI). These polarizers are designed to be used in high energy laser systems, typically as extracavity attenuators for femtosecond lasers. Polarizers are made form UV fused silica and feature a high laser damage threshold – up to 50 mJ/cm2, 50 fsec pulse, 50 Hz, 800 nm typical.
We offer broadband thin film polarizers with operating bandwidth of 100 nm, centered at 800 nm or 1030 nm.
Parameter
Basic Parameters
| Substrate material | UV FS |
| Product ID | PA02006 |
| Surface quality | 20-10 scratch & dig |
| Transmitted wavefront distortion | λ/10 @ 633nm |
| Clear aperture | > 90% of the diameter |
| Angle of incidence | 70 ° ± 2 ° |
| Parallelism | < 30 arcsec |
| Laser damage threshold | 50 mJ/cm2, 50 fsec, 50 Hz at 800 nm |
| Extinction ratio | Tp:Ts > 200:1 |
| Polarization efficiency | Rs/Tp > 99.5/95.0% |
Application
- Extra cavity attenuator for femtosecond laser
Feature
- Rs/Tp > 99.5/95.0%
- Extinction ratio: Tp:Ts > 200:1
- Back side antireflection coated: Rp<0.3%
- High laser damage threshold
Spectrogram
