Resonant cavity optical modulator

Details Resonant cavity optical modulator Resonant cavity optical modulator

1985-08-12

1988-03-22

Wan, Gene

Coherent light generators

Particular beam control device

Modulation

372 28, H01S 310

Patent

active

047333979

ABSTRACT:
A phase-matched resonant waveguide modulator suitable for very high frequency modulation and applications such as FM laser spectroscopy is described. The width of a crystal modulator section of the waveguide is chosen so that the operating frequency is just above cut-off to achieve optical and RF phase velocity matching at high frequencies such as 10 GHz by virtue of the dispersion of the waveguide near cut-off. The waveguide contains air in opposite end sections so that those sections are below cut-off and the microwave is evanescent, with the result that the end sections preferably are open for ease of optical coupling to the waveguide.

REFERENCES:
patent: 3958863 (1976-05-01), Isaacs et al.
patent: 3977770 (1976-08-01), Isaacs et al.
Tran et al., "Frequency-Modulation Spectroscopy with a Pulsed Dye Laser: Experimental Investigations of Sensitivity and Useful Features" Applied Optics 23, May 9, 1984, pp. 1353-1360.

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