✔ High damage threshold for ultrafast and high-power lasers
✔ High polarization extinction ratio
✔ Low optical loss and excellent transmission
✔ Available for UV, visible, and near-IR wavelengths
✔ Designed for common incidence angles (45°, 56°, etc.)
✔ Compatible with femtosecond and picosecond laser systems
Thin-Film Polarizers
Thin-film polarizers are precision optical components designed to separate or control the polarization state of laser beams. They use multilayer dielectric coatings to selectively transmit one polarization (p-polarized light) while reflecting the orthogonal polarization (s-polarized light). These polarizers are optimized for high-power and ultrafast laser systems, offering excellent damage thresholds, high extinction ratios, and stable optical performance.
Available in multiple wavelength ranges including UV, visible, and near-infrared, thin-film polarizers support common ultrafast laser wavelengths such as 343nm, 515nm, 532nm, 755nm, 800nm, 1030nm, and 1064nm. They are typically designed for specific angles of incidence such as 45°, 55.4°, 56°, and 68°, ensuring efficient polarization separation in advanced optical setups.
Engineered with high-quality substrates and precision coatings, these polarizers deliver low loss, excellent beam quality, and high reliability for demanding scientific and industrial laser applications.
Specifications
| Parameter | Typical Value |
|---|---|
| Wavelength Range | 343 nm – 1064 nm (custom wavelengths available) |
| Polarization Type | Transmits p-polarized light, reflects s-polarized light |
| Transmission (Tp) | >95–98% |
| Reflection (Rs) | >99% |
| Extinction Ratio (Tp/Ts) | 200:1 – 10,000:1 |
| Angle of Incidence (AOI) | 45°, 55.4°, 56°, 68° (or custom) |
| Substrate Material | UV Fused Silica, BK7 Optical Glass |
| Surface Quality | 10-5 or 20-10 Scratch-Dig |
| Surface Flatness | λ/10 @ 632.8 nm |
| Parallelism | ≤30 arcsec |
| Laser Damage Threshold | up to 10 J/cm² (10 ns pulse @ 1064 nm) |
| Clear Aperture | ≥90% of optic diameter |
| Coating Type | Multilayer dielectric thin-film coating |
Applications
• Ultrafast laser systems
• Polarization beam splitting
• Laser power control and attenuation
• Optical isolators and beam routing
• Nonlinear optics experiments
• Laser micromachining and scientific research
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