SEMICONDUCTOR LASER MODULE, AND LASER LIGHT SOURCE

Title:

SEMICONDUCTOR LASER MODULE, AND LASER LIGHT SOURCE

Document Type and Number:

Japanese Patent JP2009070979

Kind Code:

A

Abstract:

To provide a semiconductor laser module and a laser light source which have a spectrum line width having a single wavelength and a narrow band.

The semiconductor laser module is a combination of a semiconductor laser and a fiber grating having a reflection band narrower than a resonance wavelength interval determined by the element length of the semiconductor laser, and includes a first lens for converting light emitted from the semiconductor laser into collimated light, a second lens for optically coupling the collimated light to a fiber, and an optical material located on an optical axis between the first and second lenses and having a negative refractive index at the oscillation wavelength of the semiconductor laser.

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Inventors:

MAGARI KATSUAKI
KAKITSUKA TAKAAKI
YANAGAWA TSUTOMU
NISHIDA YOSHIKI
TADANAGA OSAMU
UMEKI TAKESHI
YUBE MASAO
SUZUKI HIROYUKI

Application Number:

JP2007236870A

Publication Date:

April 02, 2009

Filing Date:

September 12, 2007

Export Citation:

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Assignee:

NIPPON TELEGRAPH & TELEPHONE

International Classes:

H01S5/14; G02F1/37; H01S5/022

Domestic Patent References:

JPH11261163A	1999-09-24
JP2006245984A	2006-09-14

Foreign References:

WO2006075760A1

2006-07-20

Attorney, Agent or Firm:

Yoshikazu Tani
Kazuo Abe

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