Key Features
- High Transmission with Low Polarization Dependence: Delivers stable transmission and reflection with S/P polarization difference within ±6%, minimizing polarization-related errors.
- Broad Wavelength Coverage: Designed for 450–1600 nm, supporting VIS, NIR, and telecom bands with consistent performance.
- Durable, Long-Term Stability: Metallic/dielectric hybrid coatings ensure high reflectivity and long-term spectral stability.
- Low Polarization Sensitivity: Uniform optical behavior for both S- and P-polarized light—ideal for polarization-insensitive systems.
- Versatile Integration: Well-suited for medical imaging, test equipment, military/aerospace optics, spectroscopy, and high-precision instruments.
General Description
Shape Optics Technologies (SOT) offers high-performance Non-Polarizing Beamsplitter Cubes engineered to split incident light with minimal polarization dependence. Utilizing a metallic/dielectric hybrid coating, these NPBS cubes maintain transmission and reflection for S and P polarizations within ±6%, ensuring reliable, repeatable performance across varying illumination conditions.
With high transmission, low loss, and excellent angular stability, SOT NPBS cubes are ideal for optical systems that require precise light division without altering polarization states. Typical applications include medical imaging systems, optical test benches, laser diagnostics, aerospace instrumentation, and spectral analysis. Standard options cover 450–1600 nm, with custom configurations available.
Spectrum Transmission Curves & Customization
Standard transmission curves are available upon request.
If catalog items do not meet your requirements, custom NPBS cubes can be designed for your specific wavelength band, T/R ratio, cube size, and angle of incidence.
Contact us to discuss customization or request a quotation.
Coating Quality & Environmental Reliability
All SOT NPBS cubes are qualified to MIL-C-675C and CCC-C-440 standards:
- Adhesion: LT-90 tape test (3 removals), no blistering or peeling
- Temperature Cycling: −62 ±1 °C to 71 ±1 °C, no film detachment
- Abrasion: 1.0 lb gauze test, 25 cycles, no surface damage
- Humidity: 49 ±2 °C, 95–100% RH for 24 h, film intact
- Solvent/Cleaning: Acetone & alcohol exposure, no defects
- Salt Spray: 100 h at 35 °C with 5% NaCl, no corrosion
Standard Specifications
| Specification | Value |
|---|---|
| Substrate | BK7, Fused Silica |
| Flatness | λ/4 |
| Beam Deviation | < 3′ |
| Surface Quality | 60-40 |
| Coating | T/R = 48 ± 5%, |ITs–Tpl| < 5%, |IRs–Rpl| < 5% |
| Angle of Incidence | 0° |
| Wavelength Range | 450–1600 nm |
Standard Products
| Wavelength (nm) | T/R | 12.7×12.7×12.7 mm | 25.4×25.4×25.4 mm |
|---|---|---|---|
| 488 | 48 ± 5% | NPBS-488-01 | NPBS-488-02 |
| 532 | 48 ± 5% | NPBS-532-01 | NPBS-532-02 |
| 808 | 48 ± 5% | NPBS-808-01 | NPBS-808-02 |
| 450–650 | 48 ± 5% | NPBS-VIS-01 | NPBS-VIS-02 |
| 650–900 | 48 ± 5% | NPBS-650-900-01 | NPBS-650-900-02 |
| 900–1200 | 48 ± 5% | NPBS-900-1200-01 | NPBS-900-1200-02 |
| 1200–1600 | 48 ± 5% | NPBS-1200-1600-01 | NPBS-1200-1600-02 |
Customization options (size, wavelength band, T/R ratio) are available upon request.
Applications
- Medical Imaging – Polarization-insensitive beam splitting for accurate imaging
- Optical Test Equipment – Uniform light distribution and measurement fidelity
- Military & Defense – Laser detection/targeting with low polarization sensitivity
- Aerospace Sciences – High-accuracy optical instruments for harsh environments
- High-Precision Optical Systems – Stable, low-loss beam splitting across bands
SOT Strengths & Capabilities
SOT combines advanced thin-film coating design, precision cube fabrication, and rigorous QA to deliver NPBS cubes with excellent stability and repeatability. We support standard catalog products and fully customized solutions, ensuring optimal performance for demanding applications.