Coherent light generators – Particular beam control device – Producing plural wavelength output
Patent
1992-03-18
1993-09-28
Davie, James W.
Coherent light generators
Particular beam control device
Producing plural wavelength output
372 22, H01S 310
Patent
active
052491935
ABSTRACT:
A solid-state laser system includes both a second harmonic generating non-linear optical element and a sum frequency generating non-linear optical element disposed in a laser resonator. Both a second harmonic and a sum frequency radiation can be generated simultaneously on the same axis by a single laser resonator, thereby permitting a reduction in the required number of component parts, easy alignment and a compact construction. A first fundamental wave emitted from a semiconductor laser passes through a sum frequency generating non-linear optical element and is absorbed by a solid state laser rod whereby a second fundamental wave is generated. The generated second fundamental wave thus generated resonates in an optical resonator so as to pass through the sum frequency generating non-linear optical-element, second harmonic generating non-linear optical element and solid state laser rod. A portion of the second fundamental wave is then wavelength-converted in the second harmonic generating non-linear optical element, and, a second harmonic is generated. The generated second harmonic passes through an output mirror and is output to the exterior. The first fundamental wave and the second fundamental wave are then mixed together in the sum frequency generating non-linear optical element to generate a sum frequency radiation. The generated sum frequency radiation passes through the solid-state laser rod, second harmonic generating non-linear optical element and output mirror, and is output to the exterior.
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Brother Kogyo Kabushiki Kaisha
Davie James W.
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