Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2007-04-20
2009-06-30
Nguyen, Dung T (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S096000, C372S099000
Reexamination Certificate
active
07555027
ABSTRACT:
A quantum dot laser operates on a quantum dot ground-state optical transition. The laser has a broadband (preferably ≧15 nm) spectrum of emission and a high output power (preferably ≧100 mW). Special measures control the maximum useful pump level, the total number of quantum dots in the laser active region, the carrier relaxation to the quantum dot ground states, and the carrier excitation from the quantum dot ground states. In one embodiment, a spectrally-selective loss is introduced into the laser resonator in order to suppress lasing on a quantum dot excited-state optical transition, thereby increasing the bandwidth of the emission spectrum.
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Gubenko Alexey
Kovsh Alexey
Krestnikov Igor
Livshits Daniil
Zhukov Alexey
Brown & Michaels PC
Innolume GmbH
Nguyen Dung T
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