Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2008-04-01
2009-08-11
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S046013, C372S046015
Reexamination Certificate
active
07573927
ABSTRACT:
Disclosed is a semiconductor laser. The semiconductor laser includes a semiconductor chip that includes an active layer and emits radiation in a main radiating direction. The active layer is structured in a direction perpendicular to the main radiating direction to reduce heating of the semiconductor chip by spontaneously emitted radiation. The active layer includes a region provided for optical pumping by a pump radiation source. The optically pumped region of the active layer is surrounded by a region having, in a direction perpendicular to the main radiating direction, a periodic structure that forms a photonic crystal in which radiation having the emission wavelength is not capable of propagation.
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Cohen Pontani Lieberman & Pavane LLP
Osram Opto Semiconductors GmbH
Rodriguez Armando
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