Method and apparatus for controlling resonant frequency of an op

Details Method and apparatus for controlling resonant frequency of an op Method and apparatus for controlling resonant frequency of an op

1979-09-27

1981-10-06

Clark, Conrad J.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

331 945C, H01S 3086

Patent

active

042932238

ABSTRACT:
An apparatus and method for controlling the resonant frequency of an optical interferometer cavity having a part having a dimension defining the resonant frequency. An electrical conductor adapted for connection to a source of electrical potential is mounted on and mechanically secured to the part of the cavity which has the dimension defining the resonant frequency. The electrical conductor provides a conduction path substantially parallel to the frequency defining dimension of the aforementioned cavity part and has a coefficient of thermal expansion. Mechanical force is transmitted to the aforementioned cavity part as a function of electrothermally induced change in the length of the electrical conductor, thus causing a change in the resonant frequency of the cavity.

REFERENCES:
patent: 2830489 (1958-04-01), Mitchell et al.
patent: 3582212 (1971-06-01), Hesse et al.
patent: 3909132 (1975-09-01), Barrett
patent: 4147424 (1979-04-01), Foster et al.

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