Title:
FIBER LASER AND FIBER AMPLIFIER
Document Type and Number:
Japanese Patent JP2688303
Kind Code:
B2
Abstract:
PURPOSE: To obtain a fiber laser having a special wavelength band having oscillating characteristics of a high efficiency and a high output and amplifying characteristics of a high efficiency by using a fluoride fiber in which thulium is added to a core as a gain medium, and using a light having a special wavelength band as an exciting light.
CONSTITUTION: An exciting light of 1.06μm band is incident from a titanium sapphire laser of an exciting light source 10 to one end of a thulium-doped fluoride fiber 1 as a gain medium through a dichroic mirror 2 and a collimator lens 3. The lens 3 and a mirror 4 having a reflectivity of 100% for a laser oscillation wavelength of 1.47μm are disposed at the other end side of the fiber 1. A laser resonator is formed of the mirror 4 and an end face of the fiber 1 of an exciting light incident side. The exciting light is reflected on the mirror 2, incident to the fiber 1 through the lens, and an oscillating light of 1.47μm band is emitted through the mirror 2.
Inventors:
Tetsuro Komukai
Takashi Yamamoto
Tomonori Sugawa
Yoshiaki Miyajima
Takashi Yamamoto
Tomonori Sugawa
Yoshiaki Miyajima
Application Number:
JP6639092A
Publication Date:
December 10, 1997
Filing Date:
March 24, 1992
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G02B6/00; H01S3/06; H01S3/067; H01S3/07; H01S3/083; H01S3/094; H01S3/0941; H01S3/10; H01S3/106; H01S3/11; H01S3/17; H04B10/071; H04B10/077; H04B10/25; H04B10/29; H04B10/293; (IPC1-7): H01S3/17; H01S3/07; H01S3/10; H01S3/106; H01S3/11
Domestic Patent References:
| JPH03260633A |
Attorney, Agent or Firm:
Masatake Shiga