Title:
VARIABLE WAVELENGTH LASER
Document Type and Number:
Japanese Patent JP3176682
Kind Code:
B2
Abstract:
PURPOSE: To provide a variable wavelength laser which has a wavelength variable range of a wide band and in which an output wavelength can be simply varied.
CONSTITUTION: Exciting means 1 excites a laser medium 2a in a main resonator 2. The resonator 2 has, in addition to the medium 2a, two resonator mirrors 2b and a light input/output port 2c. A laser oscillation is generated by the means 1 and the resonator 2. A subresonator 3 has wavelength selecting means 3a and feedback means 3b, and has a role of spectrally analyzing a laser output from the resonator 2 and then again returning it between the mirrors 2b. An optical output port is provided in a device having the means 1, and the resonators 2, 3, and an optical output is produced therefrom to realize a variable wavelength laser. Since it is not necessary to provide wavelength selecting means in the main resonator of the laser, a laser oscillation is facilitated. Accordingly, even if a gain and exciting energy of the medium are small, an oscillation is performed.
Inventors:
Shinichiro Aoshima
Haruyasu Ito
Haruyasu Ito
Application Number:
JP2391392A
Publication Date:
June 18, 2001
Filing Date:
February 10, 1992
Export Citation:
Assignee:
Hamamatsu Photonics K.K.
International Classes:
H01S5/06; H01S3/082; H01S3/105; (IPC1-7): H01S3/105
Domestic Patent References:
| JP5693386A | ||||
| JP22188A | ||||
| JP3255688A | ||||
| JP3209887A | ||||
| JP384981A | ||||
| JP4181713A | ||||
| JP2271688A | ||||
| JP3504786A |
Other References:
ＩＥＥＥ ＪＯＵＲＮＡＬ ＯＦ ＱＵＡＮＴＵＭ ＥＬＥＣＴＲＯＮＩＣＳ Ｖｏｌ．２４ Ｎｏ．１１ Ｐ．２２７０−２２７１（１９８８）
Attorney, Agent or Firm:
Yoshiki Hasegawa (3 outside)