Title:
OPTICAL FIBER FOR FIBER LASER, AND FIBER LASER
Document Type and Number:
Japanese Patent JP2010129886
Kind Code:
A
Abstract:
To provide an optical fiber for a fiber laser that actualizes a fiber laser of high beam quality and high output by suppressing induced Raman scattering.
The optical fiber for the fiber laser is composed of: an optical fiber 4 having a clad 3 formed around a core 2 to which a rare earth element is added; and a photonic band gap fiber 6 disposed at a predetermined position of the optical fiber 4 and having a clad 8 with a plurality of holes 33b formed around a hollow core 7. The photonic band gap fiber 6 has a band gap including the wavelength of laser light L1 propagated in the optical fiber 4 and not including the wavelength of Raman scattered light generated when the laser light L1 is propagated.
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
YO HEI
OSONO KAZUMASA
HONGO AKISHI
SAITO KAZUYA
SATO AKIO
YANAKA KOHEI
OSONO KAZUMASA
HONGO AKISHI
SAITO KAZUYA
SATO AKIO
YANAKA KOHEI
Application Number:
JP2008304794A
Publication Date:
June 10, 2010
Filing Date:
November 28, 2008
Export Citation:
Assignee:
HITACHI CABLE
TOYOTA GAKUEN
TOYOTA MOTOR CORP
TOYOTA GAKUEN
TOYOTA MOTOR CORP
International Classes:
H01S3/06; G02B6/00; G02B6/032
Attorney, Agent or Firm:
Nobuo Kinutani
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