Coherent light generators – Particular active media – Semiconductor
Patent
1997-11-18
1999-05-04
Bovernick, Rodney
Coherent light generators
Particular active media
Semiconductor
372 45, 372 27, H01S 318
Patent
active
059011661
ABSTRACT:
A semiconductor laser that selectively performs oscillations in different polarization modes has first and second laser regions on a substrate. The first laser region exhibits a gain spectrum in which one polarization mode is dominant and the second laser region exhibits a gain spectrum in which a different polarization mode is dominant. Current injected independently into the each laser region causes polarization mode oscillation competition. One of the different polarization mode oscillations is selected by, for example, injecting a minute modulated current into at least one of the first and second laser regions.
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Handa Yuichi
Nitta Jun
Bovernick Rodney
Canon Kabushiki Kaisha
Song Yisun
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