The achromatic waveplates are designed to eliminate wavelength dependence effectively over a wide spectral range, typically several hundred nanometres. The achromatic waveplates are available for four wavelength ranges: 465 nm to 610 nm (VIS), 610 nm to 850 nm (VIS/NIR), 700 nm to 1000 nm (NIR) and 1200 nm to 1650 nm (IR).
| waveplates | achromatic – air spaced |
| Thickness | 0.3 to 1.3 mm |
| Wave front deformation | λ/4 @ 633 nm |
| Surface quality | 20/10 scratch/dig |
| Parallelism | 0.5 seconds |
| Retardance tolerance | λ/100 with respect to wavelength range |
| Temp. coefficient of retardance | less than λ/500 per °C |
| Beam divergence/parallelism | Less than 1 minute |
| Angle of incidence tolerance | For max. 1 % |
| Retardance variation | +/- 3° |
| Storage temperature range | -40°C to +75°C |
| Coating (medium reflection) | > 1% for 465–610 nm per surface, > 0.7% for 610–850 nm per surface, > 0.6% for 700–1000 nm per surface, > 0.5% for 1200–1650 nm per surface |
| Damage threshold | 2 J/cm2 (8 ns pulse @ 1064 nm); 500 kW/cm2, CW |
| Diameter | 25.4 mm with retaining ring |
| Ring thickness | 30 mm |
