Description
Femtoline Thin Film Laser Polarizers (Round) are optical components designed to separate s- and p-polarization components. These polarizers offer an excellent alternative to Glan laser polarizing prisms or cube polarizing beamsplitters, featuring a high damage threshold of up to 100 mJ/cm² at 800 nm with a pulse duration of 50 femtoseconds.
EKSMA Optics offers standard thin film laser polarizers with Rs/Tp>99.5/95.0%, high transmission thin film laser polarizers with Rs/Tp>99.5/99.0%, and thin film polarizers with high extinction ratio (HE series) with Tp>98% and Ts<0.1%.
Femtoline Thin Film Laser Polarizers (Round) 1030nm 420-1248HT
Specifications
| Substrate Material: | Fused Silica, UVFS |
|---|---|
| Polarizing Material: | Not Specified |
| Shape: | Round |
| Size: | 25.4 mm |
| Wavelength Range: | 1030 – 1030 nm |
| Max Extinction Ratio: | >= 100:1 |
| Surface Flatness: | <= Lambda/10 |
| Surface Quality (Scratch-Dig): | 20-10 |
| Thickness: | 3 mm |
| Transmitted Wavefront Distortion: | λ/10 @ 633 nm |
| Angle Of Incidence (AOI): | 56 ± 2° |
| Laser Damage Threshold: | >100 mJ/cm2, 50 fsec pulse, 50 Hz, 800 nm typical |
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Features
- Excellent alternative to Glan laser polarizing prisms and cube polarizing beamsplitters
- High damage threshold: up to 100 mJ/cm² at 800 nm with a pulse duration of 50
- femtoseconds
- Different variants available: Standard Thin Film Laser Polarizers, High Transmission
- Thin Film Laser Polarizers, and Thin Film Polarizers with High Extinction Ratio
- Extinction ratio: >200:1 for standard and high transmission polarizers, >1000:1 for
- polarizers with high extinction ratio (HE series)
- Suitable for high-energy lasers and Yb:KGW/KYW or Ti:Sapphire laser fundamental
- wavelength and its harmonics
- Ideal for intracavity Q-switch hold-off polarizers
- Best performance at Brewster angle (56° ±2°) with minimal losses
- Horizontal polarization ratio Tp/Ts: 200:1 (typical)
Applications
- High-energy laser systems
- Yb:KGW/KYW or Ti:Sapphire laser applications
- Intracavity Q-switch hold-off polarizers
- Ultrafast laser research and experiments
- Femtosecond spectroscopy and imaging
- Polarization-sensitive optical setups
Frequently Asked Questions
What are Thin Film Polarizers used for?
Thin Film Polarizers are designed for use in high energy lasers as an alternative to Glan laser polarizing prisms or cube polarizing beamsplitters. Typical applications are intracavity Q-switch hold-off polarizers or extracavity attenuators for Nd:YAG lasers.
What is the Brewster angle for Thin Film Polarizers?
Thin Film Polarizers can be used at an >40° angle of incidence, but polarization is most efficient and appears in a broad wavelength range at 56° AOI (Brewster angle).
What is the standard size for Thin Film Polarizers?
The standard size for Thin Film Polarizers is up to Ø50 mm (2”), while max available dimensions are 100×200 mm.
What is the laser damage threshold for Thin Film Polarizers?
The laser damage threshold for Thin Film Polarizers is high, reaching 10 J/cm² @ 1064 nm 8 ns.
What is the typical polarization ratio of Thin Film Polarizers?
The typical polarization ratio TP/TS is 200:1.
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