SEMICONDUCTOR LASER, METHOD FOR GENERATING LASER BEAM AND METHOD FOR REDUCING SPECTRAL LINE WIDTH OF LASER BEAM

PROBLEM TO BE SOLVED: To provide a semiconductor laser generating very narrow laser beams and having stable characteristics, and also to provide a method for generating the laser beams, and a method for reducing a spectral line width of the laser beams. SOLUTION: The semiconductor laser includes a s...

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Bibliographic Details
Main Author HASEGAWA HIDEAKI
Format Patent
LanguageEnglish
Published 14.10.2010
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:PROBLEM TO BE SOLVED: To provide a semiconductor laser generating very narrow laser beams and having stable characteristics, and also to provide a method for generating the laser beams, and a method for reducing a spectral line width of the laser beams. SOLUTION: The semiconductor laser includes a semiconductor active layer, a photonic crystal optical waveguide for forming a periodic structure of two-dimensional refractive index within a plane which is perpendicular to a semiconductor laminate direction and is directly or indirectly connected to the semiconductor active layer, and an optical resonator containing the semiconductor active layer and the photonic crystal optical waveguide and oscillating light generated from the semiconductor active layer and guided through the photonic crystal optical waveguide as laser. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20090079664