| Ultra-Fast Decay Process of Electrons in LiNbO3 Crystal Induced by Femtosecond Pulse |
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| 作者姓名： | 陈利 蒋红兵 张喜鹏 汤善春 杨宏 龚旗煌 |
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| 作者单位： | State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 |
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| 基金项目： | Supported by the National Basic Research Programme of China under Grant No 2006CB806007, the National Natural Science Foundation of China under Grant Nos 10574006, 10634020 and 10521002, and the New Century Excellent Talent Project of the Ministry of Education of China. |
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| 摘 要： | Temporal evolution of absorption induced by single femtosecond pulse （13Ors, 800nm） with high intensity in LiNbO3 is obtained using the probe shadow imaging technique in order to investigate light-induced electron relaxation processes. By saturating the polaron density with a high intensity laser pulse, ultra-fast decay process on picosecond time scale is observed. The decay time constant is about 141 ps and it is attributed to the direct interband electron-hole recombination process.
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| 关 键 词： | 探头成像技术 晶体 脉冲 电子技术 |
| 收稿时间： | 2007-4-17 |
| 修稿时间： | 2007-04-17 |
Ultra-Fast Decay Process of Electrons in LiNbO3 Crystal Induced by Femtosecond Pulse |
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| CHEN Li,JIANG Hong-Bing,ZHANG Xi-Peng,TANG Shan-Chun,YANG Hong,GONG Qi-Huang.Ultra-Fast Decay Process of Electrons in LiNbO3 Crystal Induced by Femtosecond Pulse[J].Chinese Physics Letters,2007,24(10):2970-2972. |
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| Authors: | CHEN Li JIANG Hong-Bing ZHANG Xi-Peng TANG Shan-Chun YANG Hong GONG Qi-Huang |
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| Institution: | State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 |
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| Abstract: | Temporal evolution of absorption induced by single femtosecond pulse (130fs, 800nm) with high intensity in LiNbO3 is obtained using the probe shadow imaging technique in order to investigate light-induced electron relaxation processes. By saturating the polaron density with a high intensity laser pulse, ultra-fast decay process on picosecond time scale is observed. The decay time constant is about 141ps and it is attributed to the direct interband electron--hole recombination process. |
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| Keywords: | 78 47 +p 77 84 Dy 71 38 Ht 72 20 Jv |
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