Femtosecond Degenerate Four-Wave-Mixing in ZnO Microcrystallite Thin Films  

作　　者：ZHANG Wei-li WANG Qing-yue CHAI Lu XING Qi-rong K.S.Wong H.Wang Z.K.Tang G.K.L.Wong R.Jain 张伟力;王清月;柴路;邢岐荣;K.S.Wong;H.Wang;Z.K.Tang;G.K.L.Wong;R.Jain(Ultrafast Laser Laboratory,School of Precision Instruments&Optoelectronics Engineering,and Optoelectronic Information Science and Technology Laboratory,Tianjin University,Tianjin 300072;School of Science,Tianjin University,Tianjin 300072;Department of Physics,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong;Center for High Technology Materials,University of New Mexico,1313 Goddard SE,Albuquerque,NM 87106,USA)

机构地区：[1]Ultrafast Laser Laboratory,School of Precision Instruments&Optoelectronics Engineering,and Optoelectronic Information Science and Technology Laboratory,Tianjin University,Tianjin 300072 [2]School of Science,Tianjin University,Tianjin 300072 [3]Department of Physics,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong [4]Center for High Technology Materials,University of New Mexico,1313 Goddard SE,Albuquerque,NM 87106,USA

出　　处：《Chinese Physics Letters》1999年第6期418-419,共2页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grants No.69608002;the Excellent Young Teacher's Foundation of the Ministry of Education.

摘　　要：Transient third-order optical nonlinearityχ^(3)of ZnO microcrystallite thin films is measured at various temperatures by using femtosecond degenerate four-wave-mixing.Room-temperature excitonic enhancement of is observed.The magnitude ofχ^(3)ranges between 10^(-4)to 10^(-6)esu from 4.2K to room temperature.The measuredχ^(3)response time ranging from 200 to 300 fs ultrafast for temperature down to 4.2K.

关 键 词：temperature. CRYSTALLITE NONLINEARITY 

分 类 号：O17[理学—数学]