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MWIR Variable Retarder
KEY FEATURES
- 3600 to 5500 nm transmission
- Non-mechanical polarization control
- Computer controllable
- Useful for variable attenuation
DESCRIPTION
Liquid crystal technology for polarization control now extends into the mid IR. Meadowlark’s standard line of polarization controllers can be used for these new variable retarders. They can be custom configured for use as variable attenuators and as polarization rotators.
| Specifications - MWIR Variable Retarder | |
| Retarder Material | Nematic liquid crystal |
| Substrate Material | Anti-reflection coated germanium |
| Wavelength Range | 3.6 µm to 5.7 µm |
| Maximum Retardance | 1/2 λ at 4 µm* |
| Minimum Retardance | 0.06 λ at 4 µm at 10 V |
| Reflectance | ≤ 5% per external surface |
| Operating Temperature Range | 0˚C to +50˚C |
| Response Times | < 500 msec |
| Ordering Information - MWIR Variable Retarder | |||
|
Clear Aperture in. [mm] |
Diameter ± 0.005 in. [± 0.13 mm] |
Thickness in. [mm] |
Part Number |
|
0.70 [17.8] |
Ø2.00 [Ø50.8] |
0.75 [19.1] |
LVR-200-λ |
