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

被引：16
|
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
  • [21] Carrier dynamics in self-assembled ErAs nanoislands embedded in GaAs measured by optical-pump terahertz-probe spectroscopy
    Prasankumar, RP
    Scopatz, A
    Hilton, DJ
    Taylor, AJ
    Averitt, RD
    Zide, JM
    Gossard, AC
    APPLIED PHYSICS LETTERS, 2005, 86 (20) : 1 - 3
  • [22] Transient evolution of quasifree electrons of plasma in liquid water revealed by optical-pump terahertz-probe spectroscopy
    Yong Tan
    Hang Zhao
    Rui Zhang
    Yuejin Zhao
    Cunlin Zhang
    Xi-Cheng Zhang
    Liangliang Zhang
    Advanced Photonics, 2021, 3 (01) : 56 - 62
  • [23] Transient evolution of quasifree electrons of plasma in liquid water revealed by optical-pump terahertz-probe spectroscopy
    Tan, Yong
    Zhao, Hang
    Zhang, Rui
    Zhao, Yuejin
    Zhang, Cunlin
    Zhang, Xi-Cheng
    Zhang, Liangliang
    ADVANCED PHOTONICS, 2021, 3 (01):
  • [24] Transient evolution of quasifree electrons of plasma in liquid water revealed by optical-pump terahertz-probe spectroscopy
    Yong Tan
    Hang Zhao
    Rui Zhang
    Yuejin Zhao
    Cunlin Zhang
    XiCheng Zhang
    Liangliang Zhang
    Advanced Photonics , 2021, (01) : 56 - 62
  • [25] Temperature and carrier-density dependence of electron-hole scattering in silicon investigated by optical-pump terahertz-probe spectroscopy
    Terashige, T.
    Yada, H.
    Matsui, Y.
    Miyamoto, T.
    Kida, N.
    Okamoto, H.
    PHYSICAL REVIEW B, 2015, 91 (24)
  • [26] Intrinsic carrier multiplication efficiency in bulk Si crystals evaluated by optical-pump/terahertz-probe spectroscopy
    Yamashita, G.
    Matsubara, E.
    Nagai, M.
    Kanemitsu, Y.
    Ashida, M.
    APPLIED PHYSICS LETTERS, 2014, 105 (23)
  • [27] Resolving individual carrier dynamics with kHz single-shot optical-pump terahertz-probe spectroscopy in high magnetic fields
    Dastrup, Blake S.
    Miedaner, Peter R.
    Zhang, Zhuquan
    Nelson, Keith A.
    REAL-TIME MEASUREMENTS, ROGUE PHENOMENA, AND SINGLE-SHOT APPLICATIONS IX, 2024, 12870
  • [28] Unveiling Temperature-Dependent Scattering Mechanisms in Semiconductor Nanowires Using Optical-Pump Terahertz-Probe Spectroscopy
    Boland, Jessica L.
    Amaduzzi, Francesca
    Sterzl, Sabrina
    Potts, Heidi
    Tutuncuoglu, Gozde
    Herz, Laura M.
    Morral, Anna Fontcuberta, I
    Johnston, Michael B.
    2019 44TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2019,
  • [29] Terahertz dielectric response of photoexcited carriers in Si revealed via single-shot optical-pump and terahertz-probe spectroscopy
    Minami, Yasuo
    Horiuchi, Kohei
    Masuda, Kaisei
    Takeda, Jun
    Katayama, Ikufumi
    APPLIED PHYSICS LETTERS, 2015, 107 (17)
  • [30] Investigations of Doping via Optical Pump Terahertz-Probe Spectroscopy
    Boland, Jessica L.
    Casadei, A.
    Tuetuencouglu, G.
    Matteini, F.
    Davies, C.
    Gaveen, F.
    Amaduzzi, F.
    Joyce, H. J.
    Herz, L. M.
    Morral, A. Fontcuberta, I
    Johnston, Michael B.
    2017 42ND INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2017,
12345