Title:
OCTAVE SPECTRA ACOUSTO-OPTIC TUNEABLE FILTER
Document Type and Number:
WIPO Patent Application WO2001001193
Kind Code:
A9
Abstract:
A method for increasing the tunable range of a single acousto-optic tunable filter (200) includes the steps of generating an active steering beam on a piezoelectric transducer (300) to reduce the tuning frequency at short wavelengths and increasing the tuning frequency at long wavelengths. The piezoelectric transducer is mounted in relation with an optically transparent crystal (205) at an angle such that the fixed launch angle in combination with the driving frequency provides a greater that one octave spectra to be filtered in a single AOTF.
Inventors:
BADEMIAN LEON
MCNEISH ALLISTER
MCNEISH ALLISTER
Application Number:
PCT/US2000/018257
Publication Date:
August 01, 2002
Filing Date:
June 30, 2000
Export Citation:
Assignee:
ISOMET CORP (US)
International Classes:
G02F1/11; (IPC1-7): G02F1/33
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