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Ultra-Fast Decay Process of Electrons in LiNbO3 Crystal Induced by Femtosecond Pulse |
| CHEN Li;JIANG Hong-Bing;ZHANG Xi-Peng;TANG Shan-Chun;YANG Hong;GONG Qi-Huang |
| State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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CHEN Li, JIANG Hong-Bing, ZHANG Xi-Peng et al 2007 Chin. Phys. Lett. 24 2970-2972 |
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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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Received: 17 April 2007
Published: 20 September 2007
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