Key Features
- High-Precision Beam Splitting: Ensures accurate 50/50 (or specified) transmission/reflection ratios with minimal wavefront distortion—ideal for high-accuracy optical systems.
- Broad Wavelength Coverage: Designed for VIS to NIR applications, supporting common laser lines and broadband systems.
- Interference-Coated Hypotenuse: A precision thin-film interference coating on the hypotenuse surface optimizes spectral performance and split ratio stability.
- Durable & Stable Construction: Cemented right-angle prism design with AR-coated input/output faces for long-term reliability and low loss.
- Versatile Integration: Suitable for laboratory optics, laser systems, metrology, imaging, and optical communications.
General Description
Shape Optics Technologies (SOT) offers high-performance Cube Beamsplitters engineered to divide an incident beam into two precise optical paths. Each cube is formed by cementing two right-angle prisms and applying a high-efficiency interference coating to the hypotenuse, while anti-reflection (AR) coatings are applied to all external faces to minimize Fresnel losses.
Compared to plate beamsplitters, cube beamsplitters provide superior angular stability, reduced beam displacement, and excellent mechanical robustness. With options spanning 532 nm to 1600 nm (and broadband VIS/NIR ranges), SOT cube beamsplitters are well-suited for laser routing, imaging, interferometry, spectroscopy, and telecom systems. Standard sizes include Ø25.4 mm and Ø12.7 mm, with customization available.
Spectrum Transmission Curves & Customization
Standard spectral transmission curves are available for all catalog items.
If standard options do not meet your requirements, custom cube beamsplitters can be designed for your exact wavelength band, T/R ratio, angle of incidence, substrate, and size.
Contact us to discuss your application or request a quotation.
Coating Quality & Environmental Reliability
All SOT cube beamsplitters 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, 5% NaCl, no corrosion
Standard Specifications
| Parameter | Specification |
|---|---|
| Construction | Cemented right-angle prism cube |
| Coatings | Interference coating on hypotenuse; AR on external faces |
| Sizes | Ø25.4 × 2 mm (Ø12.7 × 2 mm available) |
| T/R Ratio | 50/50 (custom ratios available) |
| Wavelength Range | VIS–NIR (up to 1600 nm) |
| Performance | High precision, low loss, excellent angular stability |
Standard Products
| Wavelength (nm) | T/R Ratio | Size (mm) | Product Code |
|---|---|---|---|
| 532 | 50/50 ±2% | Ø25.4 × 2 | CBS-532-50-01 |
| 632 | 50/50 ±2% | Ø25.4 × 2 | CBS-632-50-01 |
| 670 | 50/50 ±3% | Ø25.4 × 2 | CBS-670-50-01 |
| 780 | 50/50 ±3% | Ø25.4 × 2 | CBS-780-50-01 |
| 1064 | 50/50 ±3% | Ø25.4 × 2 | CBS-1064-50-01 |
| 1310 | 50/50 ±3% | Ø25.4 × 2 | CBS-1310-50-01 |
| 400–700 | 50/50 ±3% | Ø25.4 × 2 | CBS-VIS-50-01 |
| 650–900 | 50/50 ±3% | Ø25.4 × 2 | CBS-650-900-50-01 |
| 900–1200 | 50/50 ±3% | Ø25.4 × 2 | CBS-900-1200-50-01 |
| 1200–1600 | 50/50 ±3% | Ø25.4 × 2 | CBS-1200-1600-50-01 |
Customization options (size, wavelength, T/R ratio) are available upon request.
Applications
- Laser Systems – Beam routing, power monitoring, interferometry
- Optical Imaging – Multi-path and split-beam imaging systems
- Scientific Instruments – Spectrometers, interferometers, metrology
- Optical Communications – Signal splitting and routing in VIS/NIR systems
SOT Strengths & Capabilities
SOT combines advanced thin-film coating design, precision prism fabrication, and rigorous QA to deliver cube beamsplitters with exceptional stability and repeatability. We support both standard catalog products and fully customized solutions to meet demanding optical system requirements.