Title:
NARROW-BAND LASER
Document Type and Number:
WIPO Patent Application WO/1996/031929
Kind Code:
A1
Abstract:
A narrow-band laser comprising: a laser generating section having laser activity and capable of generating laser beam; band narrowing means which is provided on one end side of the laser generating section on the optical axis of the laser beam generated in the laser generating section to narrow the band of the laser beam by means of at least one angle-dispersion wavelength selection element, fold back the laser beam in the narrowed band and output the folded laser beam toward the laser generating section; beam folding means which is provided on the other end of the laser generating section on the optical axis of the laser beam generated in the laser generating section to fold back the input laser beam and reflect the folded laser beam into the laser generating section; and a laser branching optical unit which is provided between the laser generating section and the band narrowing means to permit part of the laser beam input from the laser generating section to pass therethrough into the band narrowing means while deflecting the remaining part of the laser beam and drawing out the same as an output beam. The laser is constructed so that the light which has passed straight through the laser branching optical unit is input into the band narrowing means, thereby stabilizing a resonance system to eliminate multiwavelength oscillation accompanying the vibration.
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Inventors:
WAKABAYASHI OSAMU (JP)
KOMORI HIROSHI (JP)
MIZOGUCHI HAKARU (JP)
KOMORI HIROSHI (JP)
MIZOGUCHI HAKARU (JP)
Application Number:
PCT/JP1996/000921
Publication Date:
October 10, 1996
Filing Date:
April 03, 1996
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
WAKABAYASHI OSAMU (JP)
KOMORI HIROSHI (JP)
MIZOGUCHI HAKARU (JP)
WAKABAYASHI OSAMU (JP)
KOMORI HIROSHI (JP)
MIZOGUCHI HAKARU (JP)
International Classes:
H01S3/1055; H01S3/225; (IPC1-7): H01S3/1055
Foreign References:
| JPH05102584A | 1993-04-23 | |||
| JPH0541164U | 1993-06-01 | |||
| JPH0418783A | 1992-01-22 | |||
| JPS62123788A | 1987-06-05 | |||
| JPH022188A | 1990-01-08 | |||
| JPH04262588A | 1992-09-17 | |||
| JPH03259583A | 1991-11-19 | |||
| JPH03214680A | 1991-09-19 | |||
| JPH0423480A | 1992-01-27 | |||
| JPH0426173A | 1992-01-29 |
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