Double-cavity electrooptic Fabry-Perot tunable filter
Abstract
The experimental development of an infrared multiple-cavity electrooptically tuned Fabry-Perot filter, using LiNbO3 is described. This filter, designed for operation in the 3-5 micron spectral band, was demonstrated by angle scanning using a He-Ne laser at 3.39 micron. The multiple-cavity configuration increased the free-spectral range of the 2-A bandwidth filter from 67 to 670 A as observed in the increased angular spacing of transmission peaks. Because of the large halfwave voltage of LiNbO3 at these wavelengths, tuning was restricted to about 15 percent of the free-spectral range.
- Publication:
-
Applied Optics
- Pub Date:
- September 1982
- DOI:
- 10.1364/AO.21.003129
- Bibcode:
- 1982ApOpt..21.3129G
- Keywords:
-
- Cavity Resonators;
- Electro-Optics;
- Fabry-Perot Interferometers;
- Infrared Filters;
- Lithium Niobates;
- Optical Filters;
- Bandwidth;
- Helium-Neon Lasers;
- Infrared Scanners;
- Remote Sensing;
- Spectrum Analysis;
- Tuning;
- Electronics and Electrical Engineering;
- FILTERS;
- FABRY PEROT;
- ELECTROOPTICS