Temperature compensation of tunable acoustic optical filters

Details Temperature compensation of tunable acoustic optical filters Temperature compensation of tunable acoustic optical filters

1979-05-21

1981-06-09

Gruber, Felix D.

Boots, shoes, and leggings

350372, 350358, 364861, G02F 1135, G02F 129, G05B 1502

Patent

active

042728258

ABSTRACT:
The heating of a tunable-acoustic optical filter (TAOF) results in a drift in the calibration of the TAOF as the acoustic-optical medium temperature varies. In practicing the invention, the TAOF is periodically locked to a reference wavenumber and a calibration correction is then derived and employed to keep the TAOF consistently accurate.

REFERENCES:
patent: 3679288 (1972-07-01), Harris
patent: 3687521 (1972-08-01), Kusters
patent: 3701583 (1972-10-01), Hammond
patent: 3701584 (1972-10-01), Runge
patent: 3729251 (1973-04-01), Hearn
patent: 3756689 (1973-09-01), Hammond et al.
patent: 3944335 (1976-03-01), Saito et al.
patent: 3982817 (1976-09-01), Feichtner
patent: 4052121 (1977-10-01), Chang
Chang, Noncollinear Acousto-Optic Filter with Large Angular Aperture, Applied Physics Letters, vol. 26, No. 7, Oct. 1, 1974, pp. 370-372.
Harris et al., CaMoO.sub.4 Electronically Tunable Optical Filter, Applied Physics Letters, vol. 17, No. 5, Sep. 1, 1970, pp. 223-225.
Harris et al., Acousto-Optical Tunable Filter, Journal of the Optical Society of America, vol. 59, No. 6, Jun. 1969, pp. 744-747.

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