Coherent light generators – Particular active media – Semiconductor
Patent
1989-03-29
1990-09-18
Sikes, William L.
Coherent light generators
Particular active media
Semiconductor
372 46, 357 17, H01S 319
Patent
active
049583557
ABSTRACT:
There is provided a super luminescent light emitting device comprising a semiconductor body including a central region and two opposing end regions extending a predetermined distance from the end faces. A gain guiding linear strip of material adjacent to a side of the active region extends between the end faces and is inclined along its longitudinal axis at a predetermined angle relative to a direction normal to at least one of the end faces. An optical beam path of the device has an optical axis of symmetry extending between the end faces parallel to the longitudinal axis of the strip. The beam path has end lateral boundaries at each of the end regions whose lateral carrier and optical confinement is determined by the gain guiding strip to allow light reflected at the end faces to be refracted out of the optical beam path. The device includes index guiding structure extending on opposite sides of the gain guiding strip over the central region of the device parallel to the longitudinal axis of the gain guiding strip. The index guiding structure determines the central lateral boundaries for the optical beam path to provide lateral carrier and optical confinement of the optical beam path at the central region.
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Alphonse Gerard A.
Palfrey Stephen L.
Epps Georgia Y.
RCA Inc.
Sikes William L.
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