Photocarriers dynamics in silicon wafer studied with optical-pump terahertz-probe spectroscopy

被引：15
|
作者：
Li, Gaofang [1 ]
Li, Dong [1 ]
Jin, Zuanming [1 ]
Ma, Guohong [1 ,2 ]
机构：
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2012年 / 285卷 / 20期
基金：
中国国家自然科学基金;
关键词：
Optical pump-terahertz probe spectroscopy; Phase transition; Antireflection; Conductivity; Phase shift; TIME-DOMAIN SPECTROSCOPY; CONDUCTIVITY; ARRAYS; BEAMS;
D O I：
10.1016/j.optcom.2012.05.053
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical pump-terahertz probe spectroscopy is employed to investigate the optical characteristics of silicon wafer. The wafer surface undergoes a phase transition from insulator to metal for terahertz wave with increasing pump fluence. The real part of the pump-induced conductivity shows strong frequency dependence, which can be well described with Drude-Smith model. Our results also demonstrate that the photoexcited Si layer acts as a broadband terahertz pulse antireflection coating with proper pump fluence. In addition, it is observed that the terahertz pulse apparently arrives at the detector earlier when silicon is optically excited. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：4102 / 4106
页数：5
相关论文
共 50 条
  • [1] Photocarrier dynamics in zinc selenide studied with optical-pump terahertz-probe spectroscopy
    Li Gao-Fang
    Ma Guo-Hong
    Ma Hong
    Chu Feng-Hong
    Cui Hao-Yang
    Liu Wei-Jing
    Song Xiao-Jun
    Jiang You-Hua
    Huang Zhi-Ming
    Chu Jun-Hao
    [J]. ACTA PHYSICA SINICA, 2016, 65 (24)
  • [2] Ultrafast optical-pump terahertz-probe spectroscopy of individual silicon nanowires
    Kim, Taeyong
    Sim, Sangwan
    Seo, Jungmok
    Lee, Jaehong
    Han, Heetak
    Lee, Taeyoon
    Choi, Hyunyong
    [J]. 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2013,
  • [3] Charge Carrier Dynamics of ZnSe by Optical-Pump Terahertz-Probe Spectroscopy
    Tapia, A. K. G.
    Yamamoto, N.
    Ponseca, C., Jr.
    Tominaga, K.
    [J]. 2011 36TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2011,
  • [4] Impact of n-type doping on the carrier dynamics of silicon nanowires studied using optical-pump terahertz-probe spectroscopy
    Beaudoin, A.
    Salem, B.
    Baron, T.
    Gentile, P.
    Morris, D.
    [J]. PHYSICAL REVIEW B, 2014, 89 (11):
  • [5] Photo-carrier dynamics of MBE-grown GaAs on Silicon studied by optical-pump terahertz-probe
    Afalla, Jessica
    Cedric Gonzales, Karl
    Muldera, Joselito
    Ann Prieto, Elizabeth
    Catindig, Gerald
    Daniel Vasquez, John
    Husay, Horace Andrew
    Moriyasu, Takeshi
    Kitahara, Hideaki
    Bulgarevich, Dmitry
    Mag-usara, Valynn
    Furuya, Takashi
    Somintac, Armando
    Salvador, Arnel
    Estacio, Elmer
    Tani, Masahiko
    [J]. 2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2018,
  • [6] Photoinduced carrier dynamics in bulk ZnTe using optical-pump terahertz-probe spectroscopy
    Deng, Hu
    Chen, Linyu
    Qu, Weiwei
    Liu, Quancheng
    Danso, Samuel
    Shang, Liping
    [J]. OPTICAL ENGINEERING, 2020, 59 (05)
  • [7] Charge Carrier Dynamics in Metalated Polymers Investigated by Optical-Pump Terahertz-Probe Spectroscopy
    Cunningham, Paul D.
    Hayden, L. Michael
    Yip, Hin-Lap
    Jen, Alex K. -Y.
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (47): : 15427 - 15432
  • [8] Tuning photoinduced terahertz conductivity in monolayer graphene: Optical-pump terahertz-probe spectroscopy
    Kar, Srabani
    Mohapatra, Dipti R.
    Freysz, Eric
    Sood, A. K.
    [J]. PHYSICAL REVIEW B, 2014, 90 (16)
  • [9] Evolution of terahertz conductivity in ZnSe nanocrystal investigated with optical-pump terahertz-probe spectroscopy
    Gaofang Li
    Xin Xue
    Xian Lin
    Sannan Yuan
    Naiyun Tang
    Fenghong Chu
    Haoyang Cui
    Guohong Ma
    [J]. Applied Physics A, 2014, 116 : 45 - 50
  • [10] Ultrafast Optical-Pump Terahertz-Probe Spectroscopy of the Carrier Relaxation and Recombination Dynamics in Epitaxial Graphene
    George, Paul A.
    Strait, Jared
    Dawlaty, Jahan
    Shivaraman, Shriram
    Chandrashekhar, Mvs
    Rana, Farhan
    Spencer, Michael G.
    [J]. NANO LETTERS, 2008, 8 (12) : 4248 - 4251
12345