Thin-Film Plate Polarizers
- Wide acceptance angle and no angle tuning required
- 45° design separates transmitted and reflected beams by 90°; optional side 2 coating for R < 0.1%
- Brewster-angle design separates s and p polarizations with greater than 1000:1 extinction ratio; no AR coating necessary
- RoHs Compliant
These thin-film plate polarizers utilize our advanced ion-beam-sputtered (IBS) coating technology to achieve high-power performance and guaranteed transmission at a specific angle of incidence, with no angle tuning required. By combining durable dielectric coatings with fused silica substrates, we produce robust optical components that are stable, easy to align and exhibit high laser damage thresholds in both reflection and transmission.
High energy plate polarizers separate s and p polarizations with an extinction ratio (Tp/Ts) of greater than 750 to 1000:1 in the transmitted beam. Thus, they are ideal for intracavity or extracavity high-power applications where fluences are greater than 500 mJ/cm2 and calcite or cemented cube polarizers cannot be used. 45 degree and/or Brewster-angle plate polarizers are available for wavelengths from 355 nm to 3000 nm.
For other wavelengths throughout the visible and near-IR (including Nd:YAG and fiber-laser wavelengths), substrate sizes or angles of incidence, please contact us.
PO1045 Right-Angle Polarizer
PO1056 Brewster-Angle Polarizer
IBS polarizers achieve high extinction ratios for high-power applications because they are actually microscopic versions of “pile-of-plates” polarizers. Each thin-film layer is arranged to transmit p-polarized light only. The s-polarized light sees a multi-layer reflector.
Thin-Film Polarizer Characteristics
| Model Number |
PO1045-FY
|
PO1045-DY
|
PO1056-FY
|
PO1056-DY
|
PO1056-TY
|
| Type | 45° Polarizer | 45° Polarizer | Brewster Polarizer | Brewster Polarizer | Brewster Polarizer |
| Wavelength Range | 1064 nm | 532 nm | 1064 nm | 532 nm | 355 nm |
| Acceptance Angle | 45° ±1° | 45° ±1° | 56° ±2° | 56° ±2° | 56° ±2° |
| p Transmission | >97% | >95% | >98% | >95% | >95% |
| s Transmission | <0.1% | <0.2% | <0.1% | <0.2% | <0.2% |
| Extinction Ratio, Tp/Ts | 750:1 | 500:1 | 1000:1 | 500:1 | 200:1 |
| Surface Quality | 10/5 | 10/5 | 10/5 | 10/5 | 10/5 |
| Transmitted Wavefront Distortion | λ/10 | λ/10 | λ/10 | λ/10 | λ/10 |
| Clear Aperture | >90% | >90% | >90% | >90% | >90% |
| Parallelism | <30 arcsec | <30 arcsec | <30 arcsec | <30 arcsec | <30 arcsec |
| Damage Threshold |
10 J/cm2, 20ns, 20Hz |
4 J/cm2, 20ns, 20Hz |
10 J/cm2, 20ns, 20Hz |
4 J/cm2, 20ns, 20Hz |
2 J/cm2, 20ns, 20Hz |
| Substrate Material | Fused Silica | Fused Silica | Fused Silica | Fused Silica | Fused Silica |
| Size† | 1.00"×0.25" | 1.00"×0.25" | 1.00"×0.25" | 1.00"×0.25" | 1.00"×0.25" |
| Price* | $700 | $750 | $350 | $500 | $900 |
* For international prices, add 10%.