Coherent light generators – Particular component circuitry – Optical pumping
Patent
1982-04-20
1984-06-19
Davie, James W.
Coherent light generators
Particular component circuitry
Optical pumping
372 82, 372 87, 372 35, H01S 309
Patent
active
044556586
ABSTRACT:
The present invention is an improved coupling circuit for use in combination wth a gas laser including a laser bore and electrode structure which includes an elongated chamber of cross-sectional dimensions suitable for confining a laser gas discharge with the elongated chamber being formed from a dielectric material and an opposing pair of parallel electrode plates, which are formed from an electrically conductive material, for transversely exciting a laser gas. An rf generator applies a voltage of alternating polarity between the pair of parallel electrode plates at a frequency ranging from 10 MHz to about 3 GHz to establish a laser gas discharge in the laser gas. A pair of optical reflectors for reflecting and guiding light energy from the laser gas discharge so that the light energy is optically independent of the internal walls of the elongated chamber as the light energy travels longitudinally the length thereof. The improved coupling circuit includes a first impedance-matching device for matching the steady state reactive impedance of the elongated chamber to the impedance of the rf generator and a second impedance-matching device coupling one of the pair electrode plate to the other electrode plate in order to cancel the pre-ignition reactive impedance of the elongated chamber. The first impedance-matching device couples the pair of electrode plates and the second impedance-matching device to the rf generator.
REFERENCES:
patent: 4352188 (1982-09-01), Griffith
patent: 4359777 (1982-11-01), Fox et al.
Davie James W.
Johansen W. Edward
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