DE2834922

DE2834922

HETEROSTRUCTURE DIODE INJECTION LASER HAVING A CONSTRICTED ACTIVE REGION In a heterostructure diode injection laser, the active layer has a region of relatively lesser thickness in registration with a stripe geometry contact. Increased gain within the region of lesser thickness relative to adjacent...

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Bibliographische Detailangaben
Hauptverfasser: SMALL, MARTIN BRAIDWOOD, MOHEGAN LAKE, N.Y., US, ZORY JR., PETER STEPHEN, OSSINING, N.Y., US
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Zusammenfassung:HETEROSTRUCTURE DIODE INJECTION LASER HAVING A CONSTRICTED ACTIVE REGION In a heterostructure diode injection laser, the active layer has a region of relatively lesser thickness in registration with a stripe geometry contact. Increased gain within the region of lesser thickness relative to adjacent regions of greater thickness tends to effectively confine lasing operation to the thinner or constricted region. The dimensions of the constricted active region may be readily selected to discriminate against multifilament lasing modes in order to produce a single spot laser beam over a wide range of injection levels.