Near millimeter wavelength modulator and tunable oscillator

Details Near millimeter wavelength modulator and tunable oscillator Near millimeter wavelength modulator and tunable oscillator

1979-03-23

1981-07-14

Moskowitz, Nelson

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

331 945C, 331 945D, 307428, H01S 310

Patent

active

042789532

ABSTRACT:
A modulator and tunable oscillator capable of reliable operation in the near millimeter wavelength region. The modulator is made up of a pair of reflectors and a beamsplitter interposed therebetween with one of the reflectors having variable reflectivity. In addition, the reflectors are spaced apart a preselected distance such that a resonant condition is achieved with respect to an incoming beam of near millimeter wavelength radiation. By applying a signal to the variable reflector a beam of radiant energy is generated at a wavelength at which a non-resonant condition is achieved between the reflectors. This generated beam of radiation is directed out of the modulator by the beamsplitter. The oscillator utilizes the same elements as the modulator and in addition incorporates therein an additional beam splitter and a detector as well as a feedback circuit between the detector and variable reflector.

REFERENCES:
patent: 3662183 (1972-05-01), Ashkin et al.
patent: 3675039 (1972-07-01), Boyd et al.
patent: 3789235 (1974-01-01), Bridges et al.
patent: 4085335 (1978-04-01), Guilino
patent: 4131792 (1978-12-01), Schlossberg
Fetterman et al., "Far-iR . . . Diode Mixers", 7/15/78, pp. 151-154, App. Phys. Letters, vol. 33, #2, G-254.
Far et al., "Thin-Film VO.sub.2 . . . Polarizers", 7/1/77, pp. 11-13, App. Phys. Letters, vol. 31, #1, G-254.

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