Key Features
- High Reflection & Transmission: Precisely reflects S-polarized light (Rs > 99%) while transmitting P-polarized light (Tp > 98%) for efficient polarization separation.
- Wide Wavelength Coverage: Available for visible to infrared wavelengths, supporting common laser lines and broadband VIS applications.
- High Extinction Ratio: >500:1 extinction ratio ensures excellent polarization purity for high-contrast optical systems.
- Accurate Polarization Control: Engineered for applications requiring stable and precise manipulation of polarized light.
- Versatile Use Cases: Ideal for laser systems, 3D projection displays, optical instruments, and military/aerospace optics.
General Description
Shape Optics Technologies (SOT) offers high-performance Polarizing Beamsplitter Plates designed to split randomly polarized light into two orthogonal linear polarizations. The PBS reflects S-polarized light and transmits P-polarized light, enabling precise control of polarization states within an optical system.
Manufactured from BK7 or fused silica with advanced thin-film coatings, SOT polarizing beamsplitter plates deliver high durability, low wavefront distortion, and excellent optical clarity. With an extinction ratio exceeding 500:1, these components are well-suited for high-contrast imaging, laser beam routing, and polarization-sensitive measurements.
Spectrum Transmission Curves & Customization
Standard spectral transmission curves are available for catalog items.
If your application requires specific wavelengths, bandwidths, or angles of incidence, custom polarizing beamsplitter plates can be designed to your exact specifications.
Contact us to discuss customization or request a quotation.
Coating Quality & Environmental Reliability
All SOT polarizing beamsplitter plates are tested to MIL-C-675C and CCC-C-440 standards:
- Adhesion Test: LT-90 tape test (3 removals), no blistering or peeling
- Temperature Cycling: −62 ±1 °C to 71 ±1 °C, no film detachment
- Abrasion Resistance: 1.0 lb gauze test, 25 cycles, no surface damage
- Humidity Resistance: 49 ±2 °C, 95–100% RH for 24 h, film intact
- Solvent & Cleaning: Acetone/alcohol exposure, no peeling or scratches
- Salt Spray: 100 h at 35 °C with 5% NaCl, no corrosion
Standard Specifications
| Specification | Value |
|---|---|
| Substrate | BK7, Fused Silica |
| Sizes | Ø25.4 × 2 mm, Ø12.7 × 2 mm |
| Transmission (P-pol) | Tp > 98.0% |
| Reflection (S-pol) | Rs > 99% |
| Extinction Ratio | > 500 : 1 |
| Surface Quality | 60-40 |
| Operating Temperature | −40 °C to +60 °C |
| Wavelengths | 488, 532, 633, 808, 1064, 1550 nm; 420–680 nm |
Applications
- Laser Systems – Polarization-controlled beam splitting and routing
- 3D Projection Displays – Accurate polarization separation for high image quality
- Optical Instruments – Polarization-sensitive detection and analysis
- Military & Aerospace – Optical sensors, communications, and targeting systems
SOT Strengths & Capabilities
SOT combines advanced thin-film coating expertise, precision fabrication, and strict QA processes to deliver reliable polarizing beamsplitter plates for demanding environments. We support both standard catalog products and fully customized solutions, ensuring optimal performance for each application.
Standard Products
| Wavelength (nm) | Performance | Size Ø25.4 × 2 mm | Size Ø12.7 × 2 mm |
|---|---|---|---|
| 532 | Tp > 98%, Rs > 99% | PBP-532-02 | PBP-532-01 |
| 633 | Tp > 98%, Rs > 99% | PBP-633-02 | PBP-633-01 |
| 808 | Tp > 98%, Rs > 99% | PBP-808-02 | PBP-808-01 |
| 1064 | Tp > 98%, Rs > 99% | PBP-1064-02 | PBP-1064-01 |
| 1550 | Tp > 98%, Rs > 99% | PBP-1550-02 | PBP-1550-01 |
| 420–680 | Tp > 98%, Rs > 99% | PBP-VIS-02 | PBP-VIS-01 |
Customization options (size, wavelength, AOI) are available upon request.