Coherent light generators – Particular active media – Semiconductor
Patent
1998-04-29
1999-06-22
Sanghavi, Hemang
Coherent light generators
Particular active media
Semiconductor
372 20, 372 46, 372102, H01S 319
Patent
active
059149787
ABSTRACT:
A semiconductor gain medium has an optical cavity comprising a multimode region permitting propagation of light with a diverging phase front and a single mode region. An optical cavity is formed by optical feedback within the medium. Preferably, the feedback comprises a combination of a cleaved facet and a grating. The gain medium may be an amplifier or, in addition to the amplifier, may include a resonator cavity, or operate as an unstable resonator.
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patent: 5657339 (1997-08-01), Fukunaga
Mehuys David G.
Scifres Donald R.
Welch David F.
Carothers, Jr. W. Douglas
Sanghavi Hemang
SDL Inc.
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