- Dielectric coated glass substrates designed for use at Brewsters angle
- Economic polarizers with high damage threshold
- Common use: Q-switching, suitable for high power applications
Features of Dielectric Brewster Polarizers:
Two polarized beams Lower polarization purity compared to common systems
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | Specification | Available Quality |
|---|---|---|---|---|---|---|
| 1 | benjamin | 04/05/2026 12:04 PM | benjamin | 04/05/2026 12:04 PM | Range of dimensions | 2mm – 75mm |
| 2 | benjamin | 04/05/2026 12:04 PM | benjamin | 04/05/2026 12:04 PM | Highest available surface figure | λ/10 (DIN: 3/0.2) |
| 3 | benjamin | 04/05/2026 12:04 PM | benjamin | 04/05/2026 12:04 PM | Highest available surface quality | 20-10 S/D (DIN: 5/2×0.1) |
| 4 | benjamin | 04/05/2026 12:04 PM | benjamin | 04/05/2026 12:04 PM | Highest available tolerance of beam deviation | 3″ (arcsec) |
| 5 | benjamin | 04/05/2026 12:04 PM | benjamin | 04/05/2026 12:04 PM | Highest available extinction ratio | 1000:1 |
| 6 | benjamin | 04/05/2026 12:04 PM | benjamin | 04/05/2026 12:04 PM | High power version for single wavelengths | ~10 J/cm² at 1064nm for 10nsec pulse |
The Brewster angle design results in a relatively good polarization purity (typically 200:1) at low cost. Since the transmitted p-polarization is not reflected from the glass surface, an anti-reflection coating on the back side is not required.
They are high damage threshold, economical polarizers, typically used for Q-switching.
When using thin film polarizers, the lateral offset of the transmitted beam must be taken into account. This depends on the thickness of the substrate. They function for one wavelength only.
