Achromatic Waveplate
Achromatic waveplates consist of two birefringent crystals of different materials. Due to their different dispersions, relatively uniform phase retardation can be achieved over a broad wavelength rang..
Product Description
Achromatic waveplates consist of two birefringent crystals of different materials. Due to their different dispersions, relatively uniform phase retardation can be achieved over a broad wavelength range. With a flat and uniform response over wavelength, achromatic waveplates offer wide wavelength coverage (310–1100 nm or 600–2700 nm) and are widely used in tunable lasers, multi-wavelength laser systems and other broadband light source applications.
- Cemented or air-spaced designs available
- Ultra-broad wavelength bandwidth
- Customization supported
Technical Parameters
| Material | Quartz Crystal + Magnesium Fluoride |
| Specification | D5–D50 mm |
| Diameter Tolerance | +0.0/–0.2 mm |
| Wavefront Distortion | < λ/4 @632.8 nm (air-spaced only) |
| Phase Retardation Accuracy | < λ/100 |
| Parallelism (single element) | < 1 arcsec |
| Surface Quality | 40/20 |
| Clear Aperture | > 90% |
| Standard Wavelength Ranges | 450–650 nm |
| 550–750 nm | |
| 650–1100 nm | |
| 900–2100 nm | |
| Coating | Double-sided AR coating, single-sided residual reflectivity R<1% |
| Damage Threshold | Cemented: >500 mJ/cm², 20 ns, 20 Hz @1064 nm |
| Air-spaced: >5 J/cm², 20 ns, 20 Hz @1064 nm |
Phase Retardation Curves
