SEMICONDUCTOR LASER ELEMENT AND SEMICONDUCTOR LASER DEVICE

PROBLEM TO BE SOLVED: To suitably condense the laser beam from a semiconductor laser array onto a small area. SOLUTION: The condensing can be increased in comparison with the conventional device by forming a Fresnel lens pattern 18 for collimating the laser beam L3 from the light emitting parts of t...

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Bibliographic Details
Main Author OKADA NAOTADA
Format Patent
LanguageEnglish
Published 15.02.2002
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To suitably condense the laser beam from a semiconductor laser array onto a small area. SOLUTION: The condensing can be increased in comparison with the conventional device by forming a Fresnel lens pattern 18 for collimating the laser beam L3 from the light emitting parts of the semiconductor laser array 11 correspondingly to the laser emitting parts by etching.
Bibliography:Application Number: JP20000238015