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Injection seeding for single-mode operation in an optically pumped high-power D2O laser |
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| Authors: | K. Sasaki O. Takahashi N. Takada M. Nagatsu T. Tsukishima T. Okada S. Okajima Y. Tsunawaki S. Sudo K. N. Sato K. Kondo H. Arimoto K. -I. Sato |
| Affiliation: | 1. Department of Electronics, Nagoya University, 464-01, Nagoya, Japan 2. Department of Electronics, Aichi Institute of Technology, 470-03, Toyota, Aichi, Japan 3. Department of Electrical Engineering, Kyushu University, 812, Hakozaki, Fukuoka, Japan 4. College of Engineering, Chubu University, 487, Kasugai, Aichi, Japan 5. Department of Electrical Engineering and Electronics, Osaka Sangyo University, 574, Daito, Osaka, Japan 6. National Institute for Fusion Science, 464-01, Nagoya, Japan 7. Plasma Physics Laboratory, Kyoto University, 611, Uji, Kyoto, Japan 8. Department of Energy Engineering and Science, Nagoya University, 464-01, Nagoya, Japan |
| Abstract: | Spectrally narrow, pulsed outputs consisting of almost a single mode have been obtained from an optically-pumped high-power (200kW) D2O laser by adopting the injection seeding method, where single-mode radiation (seed pulse) from a low-power, compact D2O laser has been injected into the main D2O laser. Spectrally narrow outputs with high power having spectral widths as narrow as 5 MHz have been obtained, when the seed pulses with frequency tuned to one longitudinal mode of the main D2O laser have been injected at a time sufficiently before the lasing of the main laser took place. The experimental results have been compared with those of numerical simulation modified to include the injection field with varying injection times. |
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