Method and apparatus for controlling resonant frequency of...

Details Method and apparatus for controlling resonant frequency of... Method and apparatus for controlling resonant frequency of...

H - Electricity

01

S

345/39

H01S 3/086 (2006.01)

Patent

CA 1175540

METHOD AND APPARATUS FOR CONTROLLING RESONANT FREQUENCY OF AN OPTICAL INTERFEROMETER CAVITY ABSTRACT OF THE DISCLOSURE 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.

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