半导体光子学与技术, 2007, 13 (4): 310, 网络出版: 2011-08-18
Ultrafast Phenomena in Solids Excited by Femtosecond Pulse
Ultrafast Phenomena in Solids Excited by Femtosecond Pulse
摘要
Abstract
The pump-probe technique is an effective instrument for investigating ultrafast dynamics. It is widely used in fundamental research and application fields, such as Physics, Chemistry and Biology. First introduced is the effect process between femtosecond laser and matter. And set forth is the fundamental of ultrafast phenomena and theory foundation of data disposal. Then introduced is the demand of making samples in experiment, experiment equipment, and the theory of strain pulse. We detect transient reflectivity change on surface of GaAs at different delayed time using femtosecond transient reflection spectroscopy. The changing curve consists of three parts: original scattering process of 100 fs, carriers-lattice thermal equilibrium of 1.5 ps and recombination process of 500 ps.
YUAN Dong-qing, ZHOU Ming, DAI Qi-xun, YUAN Run, LIU Hui-xia, REN Nai-fei, CHEN Lei. Ultrafast Phenomena in Solids Excited by Femtosecond Pulse[J]. 半导体光子学与技术, 2007, 13(4): 310. YUAN Dong-qing, ZHOU Ming, DAI Qi-xun, YUAN Run, LIU Hui-xia, REN Nai-fei, CHEN Lei. Ultrafast Phenomena in Solids Excited by Femtosecond Pulse[J]. Semiconductor Photonics and Technology, 2007, 13(4): 310.