Ultrafast dynamics of carriers in cadmium selenide

被引：0
作者：
Zhang, Jian [1 ]
Yi, Tao [1 ]
Liu, Shenye [1 ]
Jiang, Shaoen [1 ]
Yang, Weiming [1 ]
Wu, Xingzhi [2 ]
Fang, Yu [2 ]
Song, Yinglin [2 ]
机构：
[1] Research Center of Laser Fusion, CAEP, P. O. Box 919-988, Mianyang
[2] School of Physics Science and Technology, Soochow University, Suzhou
来源：
Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2015年 / 27卷 / 08期
关键词：
Cadmium selenide; Carrier; Detector; Nonlinear; Semiconductor;
D O I：
10.11884/HPLPB201527.081007
中图分类号：
学科分类号：
摘要：
Cadmium selenide can be used in the all optical framing camera and streak camera for ultrafast X-ray detection. Based on time-resolved pumping system with phase object, we studied the nonlinear properties of bulk cadmium selenide at 1030 nm under femtosecond pulse by two-photon absorption and got the nonlinear properties of two-photon absorbing coefficient, free-carrier absorption cross section, and free-carrier life time. According to the experiment, the nonliear response of cadmium selenide is a combination of bound-electron effects and two-photon-induced free-carrier effects. The Kerr effect and the two-photon excitation are transient, and the free-carrier recombination lasts for a long time. The experiment has provided useful data of carrier parameters and images foe design. ©, 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.
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页数：5
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