Electro-optical tunable birefringent filter
An electrically tunable Lyot type filter is a Lyot that include one or more filter elements. Each filter element may have a planar, solid crystal comprised of a material that exhibits birefringence and is electro-optically active. Transparent electrodes may be coated on each face of the crystal. An input linear light polarizer may be located on one side of the crystal and oriented at 45 degrees to the optical axis of the birefringent crystal. An output linear light polarizer may be located on the other side of the crystal and oriented at -45 degrees with respect to the optical axis of the birefringent crystal. When an electric voltage is applied between the electrodes, the retardation of the crystal changes and so does the spectral transmission of the optical filter.
- Research Organization:
- Nova Photonics, Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FG02-99ER54520
- Assignee:
- Nova Photonics (Princeton, NJ)
- Patent Number(s):
- 8,107,152
- Application Number:
- 12/201,614
- OSTI ID:
- 1034607
- Resource Relation:
- Patent File Date: 2008 Aug 29
- Country of Publication:
- United States
- Language:
- English
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