Thin Film Polarizers For Ultrashort Pulses
Thin Film Polarizers For Ultrashort Pulses
These thin film polarizers have been designed to provide superior performance in ultrafast Ti:Sapphire regenerative amplifiers. While pulse lengths are relatively long in these amplifiers, pulse dispersion is still a concern if pulse width is to be maintained in the recompressed pulse. Multiple round trips in the amplifier have a multiplying effect on the dispersive characteristics of any optic in the cavity. For this reason, substantial effort has been made in designing and testing these polarizers for minimum pulse dispersion.
- Minimum pulse dispersion
- Ultra broadband or high extinction versions
- Low wavefront distortion See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 11B00UP.25Thin Film Polarizer, Ultrafast, 14.3 x 28.6 mm, Rs>80%, 700-900 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 11B00UP.26Thin Film Polarizer, Ultrafast, 14.3 x28.6 mm, Rs>99%, 785-815 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More |
Specifications
| Models | | | |
|---|---|---|---|
| Size | 14.3 x 28.6 mm | 14.3 x 28.6 mm | |
| Thickness | 3.2 mm | 3.2 mm | |
| Wavelength Range | 700-900 nm | 785-815 nm | |
| Angle of Incidence | 70 ±2°, angular tuning required | 70 ±2°, angular tuning required | |
| Extinction Ratio | TP/TS >5:1 | TP/TS > 95:1 avg. | |
| Transmission | TP >96% | TP >96% avg | |
| Efficiency | TP, avg >96%, RS, avg >80% | TP, avg > 95%, RS, avg > 99% | |
| Material | Grade A N-BK7 | Grade A N-BK7 | |
| Clear Aperture | Central elliptical area, major axis ≥22.9 mm,minor axis ≥11.4 mm | Central elliptical area, major axis ≥22.9 mm, minor axis ≥11.4 mm | |
| Damage Threshold | 3 J/cm² @ 800 nm, 10 ns pulse, 10-100Hz | 3 J/cm² @ 800 nm, 10 ns pulse, 10-100Hz | |
| Surface Quality | 10-5 scratch-dig | 10-5 scratch-dig | |
| Surface Flatness | ≤λ/10 at 632.8 nm over the clear aperture | ≤λ/10 at 632.8 nm over the clear aperture | |
| Wedge | ≤3 arc min | ≤3 arc min | |
| Wavefront Distortion | ≤λ/8 at 632.8 nm over the clear aperture | ≤ λ/8 at 632.8 nm over the clear aperture | |
| Size Tolerance | ±0.13 mm | ±0.13 mm | |
| Thickness Tolerance | ±0.25 mm | ±0.25 mm |
Features
Angular Tuning
Thin film polarizers are designed to transmit p-polarized light and reflect s-polarized light. This transmission and reflection is greatest at the angle of incidence – in this case, 70°±2°. Because of the angle tolerance, fine adjustments of the polarizer's position (angular tuning) around the angle of incidence when setting up your experiment may be required to realize optimal polarization performance.
Mounting Options
These rectangular polarizers can be mounted to a verity of our mounts such as
Ideal for Ultrafast
These coatings, which are carefully placed on Grade A N-BK7 substrates that produce minimal wavefront distortion, have been specially designed to minimize pulse dispersion in ultrafast Ti:Sapphire regenerative amplifiers. Additionally, these polarizers offer damage thresholds up to 3 J/cm2 pulsed.
UP.25 Coating
UP.26 Coating
