Unified understanding of laser breakdown in the vicinity of threshold by the percolation model
| Project/Area Number |
25610173
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Plasma science
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
KATO SUSUMU 国立研究開発法人産業技術総合研究所, 電子光技術研究部門, 主任研究員 (20356786)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Akira 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門量子ビーム応用研究センター, 研究副主幹 (10215709)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | レーザーブレイクダウン / 準安定状態 / 光学結晶 / ブレークダウン / 絶縁破壊 / 長寿命励起状態 / パーコレーション |
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| Outline of Final Research Achievements |
We investigated the elementary process in laser breakdown of LiNbO3-type crystals under continuous-wave laser irradiation to obtain a unified understanding of laser breakdown.
It is well known that long-lived polarons, which have large absorption cross sections for visible and infrared light, exist in these crystals. We proposed a model of light-induced absorption of the polarons on the cause of the laser breakdown. The model is a candidate to explain the breakdown thresholds observed in experiments.
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Report
(4 results)
Research Products
(11 results)
