LASER DEVICE, LASER DISPLAY APPARATUS, LASER RADIATING APPARATUS, AND NONLINEAR OPTICAL ELEMENT

Title:

LASER DEVICE, LASER DISPLAY APPARATUS, LASER RADIATING APPARATUS, AND NONLINEAR OPTICAL ELEMENT

Document Type and Number:

Japanese Patent JP2010204197

Kind Code:

A

Abstract:

To provide a laser device which increases the wavelength width of laser beam up to several nm while satisfying a pseudophase matching condition of a periodical poling structure of a nonlinear optical element capable of obtaining high conversion efficiency.

The laser device includes: a fundamental wave generating portion 14 which has a semiconductor laser 11 having a plurality of luminous points 12, and a Bragg reflection structure 13 and generates a plurality of fundamental waves having wavelengths which are different from each other in at least one set thereof; and a nonlinear optical element 15 in which a poling structure 16 pseudophase-matched for the wavelengths of the plurality of fundamental waves L1 emitted from the fundamental wave generating portion 14 is formed so as to be varied along the propagating direction of the fundamental waves L1.

Inventors:

KIMURA KAORU
FURUKAWA AKIO
OKA MICHIO

Application Number:

JP2009047028A

Publication Date:

September 16, 2010

Filing Date:

February 27, 2009

Export Citation:

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Assignee:

SONY CORP

International Classes:

G02F1/37; G02B26/10; G03B21/00; G03B21/14; H01S5/14

Domestic Patent References:

JP2008085298A	2008-04-10
JP2007173769A	2007-07-05
JP2008028380A	2008-02-07
JP2007322695A	2007-12-13
JP2004125943A	2004-04-22
JPH08211433A	1996-08-20

Foreign References:

US5185752A

1993-02-09

Attorney, Agent or Firm:

Yoshitsuno Kakuda
Hitoshi Ito

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