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
  • [1] Increasing bandwidth of Cherenkov-type terahertz emitters by free carrier generation
    Abramovsky, N. A.
    Bodrov, S. B.
    Efimenko, E. S.
    Avetisyan, Y.
    Bakunov, M. I.
    OPTICS LETTERS, 2023, 48 (18) : 4921 - 4924
  • [2] Extremely frequency-widened terahertz wave generation using Cherenkov-type radiation
    Suizu, Koji
    Koketsu, Kaoru
    Shibuya, Takayuki
    Tsutsui, Toshihiro
    Akiba, Takuya
    Kawase, Kodo
    OPTICS EXPRESS, 2009, 17 (08): : 6676 - 6681
  • [3] Extremely frequency-widened terahertz wave generation using Cherenkov-type radiation
    Koketsu, Kaoru
    Suizu, Koji
    Shibuya, Takayuki
    Tsutsui, Toshihiro
    Kawase, Kodo
    2009 34TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, VOLS 1 AND 2, 2009, : 425 - 426
  • [4] Cherenkov-type Generation and Detection of Terahertz Radiation in a GaAs with Metal-coat Structure
    delos Santos, Ramon
    Ozawa, Shinpei
    Mag-usara, Valynn
    Azuma, Syougo
    Tuico, Anthony
    Copa, Vernalyn
    Salvador, Arnel
    Yamamoto, Kohji
    Somintac, Armando
    Kurihara, Kazuyoshi
    Kitahara, Hideaki
    Tani, Masahiko
    Estacio, Elmer
    2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), 2016,
  • [5] Efficient Cherenkov-type optical-to-terahertz converter with terahertz beam combining
    Bakunov, M., I
    Efimenko, E. S.
    Gorelov, S. D.
    Abramovsky, N. A.
    Bodrov, S. B.
    OPTICS LETTERS, 2020, 45 (13) : 3533 - 3536
  • [6] Intense Cherenkov-type terahertz electromagnetic radiation from ultrafast laser-plasma interaction
    胡强林
    刘世炳
    李维
    Chinese Physics B, 2008, 17 (03) : 1050 - 1054
  • [7] Intense Cherenkov-type terahertz electromagnetic radiation from ultrafast laser-plasma interaction
    Hu Qiang-Lin
    Liu Shi-Bing
    Li Wei
    CHINESE PHYSICS B, 2008, 17 (03) : 1050 - 1054
  • [8] Cherenkov-Type Terahertz Generation by Long-Wavelength Ultrafast Laser Excitation of a GaP Crystal
    Bodrov, S. B.
    Shugurov, A. I.
    Efimenko, E. S.
    Kurnikov, M. A.
    Ilyakov, I. E.
    Shishkin, B. V.
    Bakunov, M. I.
    PHOTONICS, 2023, 10 (12)
  • [9] Cherenkov-type terahertz generation by optical rectification in KD2PO4 (DKDP) crystal
    Bodrov, S. B.
    Abramovsky, N. A.
    Paramonov, G. S.
    Belyaev, S. N.
    Prokhorov, A. P.
    Stepanov, A. N.
    Bakunov, M. I.
    JOURNAL OF APPLIED PHYSICS, 2023, 134 (21)
  • [10] Generation of sub-MV/cm terahertz fields with large-size Cherenkov-type optical-to-terahertz converters
    Abramovsky, N. A.
    Bodrov, S. B.
    Korytin, A. I.
    Korytin, A. N.
    Bakunov, M., I
    OPTICS LETTERS, 2023, 48 (12) : 3203 - 3206
12345