A narrow-band interference filter with photorefractive LiNbO<sub>3</sub>
R Muller; M T Santos; L Arizmendi; J M Cabrera; R Muller; Dept. de Fisica de Mater., Univ. Autonoma de Madrid, Spain; M T Santos; Dept. de Fisica de Mater., Univ. Autonoma de Madrid, Spain; L Arizmendi; Dept. de Fisica de Mater., Univ. Autonoma de Madrid, Spain; J M Cabrera; Dept. de Fisica de Mater., Univ. Autonoma de Madrid, Spain
Журнал:
Journal of Physics D: Applied Physics
Дата:
1994-02-14
Аннотация:
A narrow-bandwidth interference filter has been developed using volume holography in photorefractive LiNbO<sub>3</sub> crystals. The device works as a Bragg reflector using a volume hologram recorded, fixed and developed in a LiNbO<sub>3</sub> sample. With a 2 mm thick LiNbO<sub>3</sub> plate the following performances have been achieved: a peak reflectivity above 32%, a full-width at half-maximum bandwidth below 0.05 nm, an angular field of view of about 3 degrees and a peak wavelength of 518.45 nm (for green Ar laser writing wavelength). These performances compare well with that exhibited by the conventional Lyot-Ohman and Solc filters. A complete explanation of the fabrication procedure is given, including practical details needed for producing such an efficiency with fixed holograms in LiNbO<sub>3</sub>.
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