Coherent light generators – Particular component circuitry – Optical pumping
Patent
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
Choi Jong-Woon
Kim Young-Pyung
Kim Yun-Myung
Jr. Leon Scott
Korea Research Institute of Standards and Science
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