Device for producing an electric potential having a difference f

Details Device for producing an electric potential having a difference f Device for producing an electric potential having a difference f

1996-08-06

1998-10-06

Scott, Jr., Leon

Coherent light generators

Particular component circuitry

Optical pumping

372 26, 372 28, 372 32, H01S 300

Patent

active

058188584

ABSTRACT:
A device and method for measuring a difference frequency having a simple structure and utilizing optogalvanic effect for measuring a difference frequency when carbon dioxide laser light of a single wavelength is varied in frequency by a measuring object. When a part of frequency varied laser light is mixed with an original frequency of laser light by self-mixing in a laser resonator, a strength of the laser light in the resonator is modulated to a difference frequency between the original frequency and the variation frequency. Since a current change in response to strength of light is generated by the optogalvanic effect in the laser resonator, when a frequency of optogalvanic current change is measured, the difference frequency can be measured.

REFERENCES:
patent: 4402606 (1983-09-01), Zalewski et al.
patent: 4548496 (1985-10-01), Roberts et al.
patent: 4585344 (1986-04-01), Webster

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