2002 Fiscal Year Final Research Report Summary
Fabrication of Self Q-Switehed, Co-Doped Waveguide Laser by Use of PLD
| Project/Area Number |
12450035
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | KEIO UNIVERSITY |
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Principal Investigator |
OBARA Minoru KEIO UNIVERSITY, ELECTRONICS AND ELECTRICAL ENGINEERING, PROFESSOR, 理工学部, 教授 (90101998)
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| Co-Investigator(Kenkyū-buntansha) |
KUMAGAI Hiroshi THE INSTITUTE OF PHYSICAL AND CHEMICAL RESEARCH, LASER TECHNOLOGY LABORATORY, SENIOR SCIENTIST, レーザー物理工学研究室, 研究員
KANNARI Fumihiko KEIO UNIVERSITY, ELECTRONICS AND ELECTRICAL ENGINEERING, PROFESSOR, 理工学部, 教授 (40204804)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Waveguide Laser / Laser Ablation / Nd:GGG / Nd.Cr.YAG. / Thin Film Laser / Thin Film Growth / Nd:KGW / PLD |
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| Research Abstract |
1. Waveguide laser thin films have been improved.
2. Optimum Nd and Cr ion density, crystal length, output coupler have theoretically been determined with computer simulation of Cr, Nd co-doped GGG waveguide lasers.
3. With ceramic targets, high quality (110) oriented Nd:KGW thin films were fabricated. The substrate of(1102) sapphire is found to be better than (100) YAG substrate on which the high quality Nd:KGW thin films are grown. The K-enriched target and growth temperature of 700 ℃ were found optimum for the best growth conditions. In addition post-annealing improved the crystal quality of the fabricated films.
4. Grating formation on the Nd:GGG thin film for pumping are successfully demonstrated with interferometric femtosecond laser processing.
5. The report of this project has been drawn up.
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