Title:
パルスレーザ装置、テラヘルツ発生装置、テラヘルツ計測装置及びテラヘルツトモグラフィー装置
Document Type and Number:
Japanese Patent JP4834718
Kind Code:
B2
Abstract:
A pulse laser apparatus includes a laser (1; 4; 50) configured to generate a pulse of a laser beam, a fiber amplifier (2; 9), and a pulse compressor (3; 14,15). The fiber amplifier includes a rare-earth doped fiber (41) that exhibits normal dispersion at a wavelength of the laser beam generated from the laser. The pulse laser apparatus further includes a unit configured to give a loss to energy portions in a wavelength region corresponding to a zero-dispersion wavelength of the rare-earth doped fiber and/or a wavelength region longer than the zero-dispersion wavelength within a wavelength spectrum of the laser beam having been chirped in the fiber amplifier.
Inventors:
Toshihiko Ouchi
Takashi Katagiri
Kentaro Furusawa
Takashi Katagiri
Kentaro Furusawa
Application Number:
JP2008304605A
Publication Date:
December 14, 2011
Filing Date:
November 28, 2008
Export Citation:
Assignee:
Canon Inc
International Classes:
H01S3/10; G01B11/06; G01B11/24; G01J11/00; G01N21/35; G01N21/3586; G02F1/37; H01S1/02; H01S3/06; H01S3/067; H01S3/108
Domestic Patent References:
| JP6088976A | ||||
| JP4291972A | ||||
| JP2007516600A |
Foreign References:
| US20040190119 | ||||
| US5892615 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa