Title:
ファイバレーザ装置
Document Type and Number:
Japanese Patent JP4316840
Kind Code:
B2
Abstract:
Fiber laser unit 1 comprises a plurality of fiber lasers 2 and 3 that generate laser beams by exciting a laser active substance inside cores 2a and 3a by exciting light, propagate the laser beams inside the cores 2a and 3a, and output the laser beams from the end portions 2c and 3c, wherein the respective fiber lasers 2 and 3 have resonators 4 and 5 that reflect the laser beams on both ends 2b, 2c, 3b, and 3c thereof and have a structure in which a part of the cores 2a and 3a is reduced in diameter, the diameter reduced portions of the cores 2a and 3a are made proximal to each other, injection synchronization is carried out inside the resonators 4 and 5 by laser beams leaked from the cores 2a and 3a, and a loss is applied to the port of either one of the fiber lasers 2 and 3. According to this fiber laser unit 1, by a simple structure in which the cores 2a and 3a are made proximal to each other and injection synchronization is carried out by using laser beams leaked from the cores 2a and 3a, coherent addition of lasers with extremely high addition efficiency is realized.
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Inventors:
Akira Shirakawa
Ueda Kenichi
Hirofumi Suga
Hirofumi Miyajima
Ueda Kenichi
Hirofumi Suga
Hirofumi Miyajima
Application Number:
JP2002181821A
Publication Date:
August 19, 2009
Filing Date:
June 21, 2002
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
Ueda Kenichi
Akira Shirakawa
Ueda Kenichi
Akira Shirakawa
International Classes:
G02B6/287; H01S3/06; H01S3/067; H01S3/07; H01S3/082; H01S3/23
Domestic Patent References:
| JP5297242A | ||||
| JP4268513A | ||||
| JP61273508A |
Other References:
N.M.Lyndin et al.,Proceedings of the SPIE -The International Society for Optical Engineering,1994年 4月,Vol.2212,p.564-570
N.M.Lyndin et al.,Quantum Electronics,1994年12月,Vol.24, No.12,p.1058-1061
T.B.Simpson et al.,2001 IEEE/LEOS Annual Meeting Conference Proceedings (LEOS 2001),2001年11月,14th, Vol.1,p.62-63
V.A.Kozlov et al.,Optics Letters,1999年12月15日,Vol.24, No.24,p.1814-1816
N.M.Lyndin et al.,Quantum Electronics,1994年12月,Vol.24, No.12,p.1058-1061
T.B.Simpson et al.,2001 IEEE/LEOS Annual Meeting Conference Proceedings (LEOS 2001),2001年11月,14th, Vol.1,p.62-63
V.A.Kozlov et al.,Optics Letters,1999年12月15日,Vol.24, No.24,p.1814-1816
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Tatsuya Shioda
Shiro Terasaki