Butt-coupled single transverse mode diode pumped laser

Coherent light generators – Particular pumping means – Pumping with optical or radiant energy

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372 99, 372 49, H01S 3091

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active

048478512

ABSTRACT:
A solid state laser is optically pumped by a semiconductive diode. The output facet of the pumping diode is butt-coupled to the input facet of the laser gain medium. The laser gain medium has a short absorption length (<500 um) for the optical pumping radiation such that the pumped mode volume is so small as to support only a single transverse mode of oscillation, i.e., TEM.sub.00 mode operation. In one embodiment a reflector of the laser cavity is formed on the output facet of the pumping diode. In another embodiment the input facet of the laser gain material is bonded to the output facet of the diode pump by means of an index-matching optical cement. The resultant diode pumped laser offers improved frequency stability and reduced size.

REFERENCES:
patent: 4603421 (1986-07-01), Scifres et al.
patent: 4667331 (1987-05-01), Alferness et al.
patent: 4728168 (1988-03-01), Alferness et al.

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