Acousto-optic tunable filter

Details Acousto-optic tunable filter Acousto-optic tunable filter

G - Physics

02

F

345/58

G02F 1/11 (2006.01)

Patent

CA 1285060

ABSTRACT OF THE DISCLOSURE An acousto-optic tunable filter is modified in order to provide a minimum of resolution degradation when operated in a wavelength scan mode. A second face of the acousto-optic crystal opposite the first face on which the acoustic transducer is mounted is disposed so as to be non-parallel to the first face. As a result, acoustic waves launched into the acousto-optic crystal are reflected by the non-parallel second face resulting in the production of minimal diffraction of the light passing through the crystal by reflected acoustic waves.

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