Semiconductor laser device and optical pickup device

Semiconductor laser device and optical pickup device

A semiconductor laser device includes: a semiconductor laser chip which is composed of a semiconductor substrate and a plurality of semiconductor layers stacked on an element formation face of the semiconductor substrate and which outputs an irradiation light for irradiating an optical disk; and a l...

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Hauptverfasser: Takasuka, Shouichi, Kuroda, Toshihiro, Atoji, Makoto
Format: Patent
Sprache:eng
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creator Takasuka, Shouichi
Kuroda, Toshihiro
Atoji, Makoto
description A semiconductor laser device includes: a semiconductor laser chip which is composed of a semiconductor substrate and a plurality of semiconductor layers stacked on an element formation face of the semiconductor substrate and which outputs an irradiation light for irradiating an optical disk; and a light receiving element which receives the irradiation light reflected by the optical disk as a feedback light. The semiconductor laser chip includes on one face thereof an electrode facing an optical element and is fixed in a package so that at least one of sub-beams reflected by the optical disk is incident on the one face. A chip exposing portion for exposing a region of the one face where the sub-beam is incident is formed in the electrode.
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The semiconductor laser chip includes on one face thereof an electrode facing an optical element and is fixed in a package so that at least one of sub-beams reflected by the optical disk is incident on the one face. A chip exposing portion for exposing a region of the one face where the sub-beam is incident is formed in the electrode.</abstract><oa>free_for_read</oa></addata></record>
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title Semiconductor laser device and optical pickup device
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