# US 5,703,900 A · Laser-diode-pumped solid state laser and method of manufacturing the same

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- Number: US 5,703,900 A
- Document ID: US5703900A
- Status: Granted
- Kind: A
- Application number: 08/580,183
- Filed: 1995-12-28
- Granted: 1997-12-30
- Earliest claimed: 1994-12-28
- Assignees: Fuji Photo Film Co., Ltd.; Fuji Photo Optical Co., Ltd.
- Inventors: Nobuharu Nozaki; Shinji Mitsumoto; Kazumi Kubo; Fumio Kobayashi
- Web page: https://patentgrep.com/patent/US5703900A

## CPC

- H01S 3/025: {of solid state lasers, e.g. housings or mountings}
- H01S 3/0401: {of optical elements being part of laser resonator, e.g. windows, mirrors, lenses}
- H01S 3/0405: {Conductive cooling, e.g. by heat sinks or thermo-electric elements}
- H01S 3/042: for solid state lasers {(H01S3/0401 takes precedence)}
- H01S 3/09415: {the pumping beam being parallel to the lasing mode of the pumped medium, e.g. end-pumping}
- H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL

## Abstract

A laser-diode-pumped solid state laser includes a Fabry-Perot resonator having a pair of resonator mirrors. A holder provided with a pair of mirror mounting faces spaced from each other in the direction of the optical axis of the resonator is prepared and the resonator mirrors are mounted by bonding the end face thereof, which intersects the optical axis of the resonator, to the mirror mounting faces of the holder by an adhesive layer. The thickness of the adhesive layer is not larger than 5.mu..

## Claims

### Claim 1

A laser-diode-pumped solid state laser comprising a Fabry-Perot resonator having a pair of resonator mirrors wherein the improvement comprises that
a holder is provided with a pair of mirror mounting faces spaced from each other in the direction of the optical axis of the resonator,
the resonator mirrors are mounted by bonding the end face thereof, which intersects the optical axis of the resonator, to the mirror mounting faces of the holder by an adhesive layer, and
the thickness of the adhesive layer is not larger than 5.mu..

### Claim 2 (depends on 1)

A laser-diode-pumped solid state laser as defined in claim 1 in which the mirror mounting face D are not larger than the oscillation wavelength of the laser in surface roughness.

### Claim 3

A method of manufacturing a laser-diode-pumped solid state laser in which when an optical part which governs the length of the resonator of the laser-diode-pumped solid state laser is bonded to a part mounting surface of a holder which intersects the optical axis of the resonator, the optical part is brought into a close contact with the part mounting surface and then adhesive is impregnated between the optical part and the part mounting surface.