Waveplates, also known as retarder plates, are optical components designed to modify the polarization state of light by introducing a controlled phase delay between two orthogonal polarization components. They are essential for applications requiring precise polarization management, such as laser beam control, optical testing, microscopy, spectroscopy, and fiber optics.
Waveplates operate on the principle of birefringence, where different polarization components travel at different velocities through an anisotropic material. By carefully selecting the material and thickness, a precise phase shift is achieved—most commonly 90° (quarter-wave) or 180° (half-wave)—allowing conversion between linear, circular, and elliptical polarization states.
SOT waveplates are engineered for high transmission, low wavefront distortion, and excellent environmental durability, ensuring consistent performance in demanding optical systems.
Key Features
- Versatile Polarization Control – Precisely adjusts polarization states for lasers and optical systems
- High Phase Accuracy – Accurate retardation enables reliable polarization conversion
- Premium Optical Materials – Manufactured from fused silica, quartz, and sapphire
- Custom Wavelength Options – Tailored designs for specific laser wavelengths
- Wide Application Scope – Suitable for scientific, industrial, and medical optics
Spectrum Transmission
Standard waveplates are available for common laser wavelengths. When standard components do not meet system requirements, custom waveplates can be designed based on wavelength, retardation accuracy, material choice, and operating environment.
Coating Quality & Environmental Reliability
All waveplates undergo stringent testing to ensure long-term stability and performance:
- Adhesion Test (MIL-C-675C) – No blistering or peeling after repeated tape removal
- Thermal Cycling – −62°C to +71°C with no coating detachment
- Abrasion Resistance (MIL-C-675C / CCC-C-440) – No surface damage after 25 cycles at 1.0 lb load
- Humidity Test – 95–100% RH at 49°C for 24 hours without defects
- Solvent Resistance – Stable after acetone and alcohol exposure
- Salt Spray Test – 100 hours at 35°C, 5% salt concentration with no coating degradation
Standard Specifications
| Material | Wavelength | Size | Thickness | Surface Quality | Coating |
|---|---|---|---|---|---|
| Fused Silica | 1064 nm | Ø25 mm | 1 mm | 60-40 | Multi-layer dielectric |
| Quartz | 532 nm | Ø30 mm | 1 mm | 60-40 | Multi-layer dielectric |
| Sapphire | 355 nm | Ø40 mm | 1 mm | 60-40 | Multi-layer dielectric |
Additional sizes, wavelengths, and materials available upon request.
Typical Applications
- Laser Systems – Polarization control for marking, engraving, and cutting
- Microscopy – Contrast enhancement and polarization manipulation
- Optical Testing & Metrology – Polarization analysis and calibration
- Spectroscopy – Controlled polarization for accurate spectral measurements
- Fiber Optics – Polarization maintenance and adjustment
Standard Products
| Description | Wavelength | Thickness | Size | Item No. |
|---|---|---|---|---|
| Quarter-Wave Plate | 532 nm | 1 mm | Ø25 mm | XQW532 |
| Half-Wave Plate | 1064 nm | 1 mm | Ø30 mm | XHW1064 |
| Full-Wave Plate | 650 nm | 1 mm | Ø50 mm | XFW650 |
| Custom Waveplates | Custom | Custom | Custom | Custom |