Strong spectral broadening of Cherenkov-type terahertz radiation by free carrier generation

被引：2
|
作者：
Efimenko, E. S. [1 ,2 ]
Abramovsky, N. A. [1 ]
Bakunov, M. I. [1 ]
机构：
[1] Univ Nizhny Novgorod, Dept Radiophys, Nizhnii Novgorod 603022, Russia
[2] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia
来源：
PHYSICAL REVIEW A | 2023年 / 107卷 / 01期
基金：
俄罗斯科学基金会;
关键词：
FREQUENCY UP-CONVERSION; PULSE-FRONT EXCITATION; OPTICAL RECTIFICATION; CERENKOV RADIATION; WAVE GENERATION; LASER-PULSES; SEMICONDUCTORS; ABSORPTION; LINBO3; TIME;
D O I：
10.1103/PhysRevA.107.013526
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Free carrier generation is commonly viewed as detrimental to the optical-to-terahertz conversion efficiency in electro-optic crystals due to free carrier absorption of terahertz radiation. Contrary to this view, we show by numerical simulation that free carrier generation can have a positive effect on the Cherenkov-type terahertz emission from ultrashort laser pulses by strongly broadening the radiation bandwidth. The broadening is produced by terahertz emission from a surge current of the optically generated carriers, which are accelerated by the rectified electric field. Specific results are obtained for GaP pumped at a 1.7-mu m wavelength.
引用
收藏
页数：11
相关论文
共 50 条
  • [31] Highly efficient Cherenkov-type terahertz generation by 2-μm wavelength ultrashort laser pulses in a prism-coupled LiNbO3 layer
    Bodrov, S. B.
    Ilyakov, I. E.
    Shishkin, B. V.
    Bakunov, M. I.
    OPTICS EXPRESS, 2019, 27 (25) : 36059 - 36065
  • [32] Modulation of Terahertz Generation in Two-color Photoionization Verified by the Spectral Broadening
    Gong, Chen
    Kawayama, Iwao
    Murakami, Hironaru
    Teramoto, Takahiro
    Tonouchi, Masayoshi
    2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2021,
  • [33] Strong Terahertz radiation generation via wakefield in collisional plasma
    Malik, Hitendra K.
    Singh, Divya
    Kumar, Ravinder
    JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE, 2020, 14 (01): : 1279 - 1287
  • [34] Unraveling of free-carrier absorption for terahertz radiation in heterostructures
    Wacker, Andreas
    Bastard, Gerald
    Carosella, Francesca
    Ferreira, Robson
    Dupont, Emmanuel
    PHYSICAL REVIEW B, 2011, 84 (20)
  • [35] ELECTRONIC STEERING OF RADIATION BEAM BY PHASE CONTROL IN THE ARRAYS OF UNCOUPLED NONLINEAR TRANSMISSION LINES AND CHERENKOV-TYPE HPM OSCILLATORS
    Rostov, V.
    Romanchenko, I.
    Gunin, A.
    Ulmaskulov, M.
    Rukin, S.
    Shunailov, S.
    Sharypov, K.
    Yalandin, M.
    2017 IEEE 21ST INTERNATIONAL CONFERENCE ON PULSED POWER (PPC), 2017,
  • [36] Gigawatt-class radiation generated by a Ka-band overmoded Cherenkov-type high power millimeter wave generator
    Wu, Dapeng
    Shu, Ting
    Ju, Jinchuan
    Peng, Shengren
    REVIEW OF SCIENTIFIC INSTRUMENTS, 2015, 86 (08):
  • [37] Optical generation of strong-field terahertz radiation and its application in nonlinear terahertz metasurfaces
    Ma, Zhenzhe
    Li, Peiyan
    Chen, Sai
    Wu, Xiaojun
    NANOPHOTONICS, 2022, 11 (09) : 1847 - 1862
  • [38] Effects of metal heating on the spectral composition and generation efficiency of terahertz radiation
    Bezhanov, S. G.
    Uryupin, S. A.
    LASER PHYSICS LETTERS, 2019, 16 (07)
  • [39] Influence of surface passivation on ultrafast carrier dynamics and terahertz radiation generation in GaAs
    Lloyd-Hughes, J.
    Merchant, S. K. E.
    Fu, L.
    Tan, H. H.
    Jagadish, C.
    Castro-Camus, E.
    Johnston, M. B.
    APPLIED PHYSICS LETTERS, 2006, 89 (23)
  • [40] Comparison of type I and type II heterojunction unitravelling carrier photodiodes for terahertz generation
    Dyson, Angela
    Henning, Ian D.
    Adams, Michael J.
    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 2008, 14 (02) : 277 - 283
12345