Influence of Laser Energy on Terahertz Radiation from Gas Plasma

Si-qing WU; Bo SHEN; Gang XIONG; Jiang-hua LIU

doi:10.37188/fgxb20204107.0873

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Influence of Laser Energy on Terahertz Radiation from Gas Plasma

Luminescence Applications and Interdisciplinary Fields | 更新时间：2020-09-10

- Influence of Laser Energy on Terahertz Radiation from Gas Plasma
- Chinese Journal of Luminescence Vol. 41, Issue 7, Pages: 873-877(2020)
- 作者机构：
  
  1.湖北科技学院电子与信息工程学院, 湖北咸宁 437100
  2.华中科技大学武汉光电国家研究中心, 湖北武汉 430074
- 作者简介：
- 基金信息：
  
  Supported by Science and Technology Planning Project of Hubei Province
- DOI：10.37188/fgxb20204107.0873
  CLC： O437
- Received：25 March 2020，
  
  Accepted：06 May 2020，
  
  Published：2020-07
- 稿件说明：
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Si-qing WU, Bo SHEN, Gang XIONG, et al. Influence of Laser Energy on Terahertz Radiation from Gas Plasma[J]. Chinese Journal of Luminescence, 2020, 41(7): 873-877.
DOI：

Si-qing WU, Bo SHEN, Gang XIONG, et al. Influence of Laser Energy on Terahertz Radiation from Gas Plasma[J]. Chinese Journal of Luminescence, 2020, 41(7): 873-877. DOI： 10.37188/fgxb20204107.0873.

摘要

双色激光脉冲激励气体等离子体产生太赫兹波是得到高强度宽频带太赫兹波的重要方法，本文利用光电流模型研究了该方法中激光能量对产生太赫兹波的影响。理论计算表明，太赫兹波随激光能量的增大而增强，而太赫兹波的频谱结构不受激光能量的影响。分析了双色激光能量影响太赫兹波强度的原因，并利用自由电子浓度和电子电流密度诠释了该影响的内在物理机制。该研究为提高太赫兹辐射强度提供了一种有效的途径。

Abstract

It is an important method to obtain high intensity and broadband terahertz (THz) wave utilizing gas plasma excited by two-color laser pulses

and this paper has studied the influence of laser energy on THz radiation in the method on the basis of the transient photocurrent model. Theoretical calculation proves that THz wave will increase with the increase of laser energy

but the distribution of THz spectrum will not change with the variation of laser energy. Furthermore

the reason of laser energy affecting THz wove is analyzed

and the physical mechanism of this influence is explained by calculating the free electrons centration and drift current density. This study provides an effective way to improve the intensity of THz radiation.

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references

USHAKOV A A, CHIZHOV P A, ANDREEVA V A, et al .. Ring and unimodal angular-frequency distribution of THz emission from two-color femtosecond plasma spark[J]. Opt. Express , 2018, 26(14):18202-18213.

NGUYEN A, DE ALAIZA MARTÍNEZ G, DÉCHARD J, et al .. Spectral dynamics of THz pulses generated by two-color laser filaments in air:the role of Kerr nonlinearities and pump wavelength[J]. Opt. Express , 2017, 25(5):4720-4740.

KIM K Y. Generation of coherent terahertz radiation in ultrafast laser-gas interactions[J]. Phys. Plasmas , 2009, 16(5):056706-1-8.

KOSAREVA O, ESAULKOV M, PANOV N, et al .. Polarization control of terahertz radiation from two-color femtosecond gas breakdown plasma[J]. Opt. Lett ., 2018, 43(1):90-93.

DU H W, HOSHINA H, OTANI C, et al .. Terahertz waves radiated from two noncollinear femtosecond plasma filaments[J]. Appl. Phys. Lett ., 2015, 107(21):211113.

鄂轶文, 黄媛媛, 徐新龙, 等.太赫兹偏振测量系统及其应用[J].中国光学, 2017, 10(1):98-113. E Y W,

HUANG Y Y, XU X L, et al .. Polarization sensitive terahertz measurements and applications[J]. Chin. Opt ., 2017, 10(1):98-113. (in Chinese)

SIM Y C, MAENG I, SON J H. Frequency-dependent characteristics of terahertz radiation on the enamel and dentin of human tooth[J]. Curr. Appl. Phys ., 2009, 9(5):946-949.

LU M H, SHEN J L, LI N, et al .. Detection and identification of illicit drugs using terahertz imaging[J]. J. Appl. Phys ., 2006, 100(10):103104-1-5.

KIM K Y, GLOWNIA J H, TAYLOR A J, et al .. Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields[J]. Opt. Express , 2007, 15(8):4577-4584.

LU C H, ZHANG S, YAO Y H, et al .. Effect of two-color laser pulse intensity ratio on intense terahertz generation[J]. RSC Adv ., 2015, 5(2):1485-1490.

KARPOWICZ N, DAI J M, LU X F, et al .. Coherent heterodyne time-domain spectrometry covering the entire "terahertz gap"[J]. Appl. Phys. Lett ., 2008, 92(1):011131-1-3.

HAMSTER H, SULLIVAN A, GORDON S, et al .. Subpicosecond, electromagnetic pulses from intense laser-plasma interaction[J]. Phys. Rev. Lett ., 1993, 71(17):2725-2728.

KRESS M, LÖFFLER T, EDEN S, et al .. Terahertz-pulse generation by photoionization of air with laser pulses composed of both fundamental and second-harmonic waves[J]. Opt. Lett ., 2004, 29(10):1120-1122.

KIM K Y, TAYLOR A J, GLOWNIA J H, et al .. Coherent control of terahertz supercontinuum generation in ultrafast laser-gas interactions[J]. Nat. Photonics , 2008, 2(10):605-609.

SCHUMACHER D W, BUCKSBAUM P H. Phase dependence of intense-field ionization[J]. Phys. Rev. A, 1996, 54(5):4271-4278

DELONE N B, KRAINOV V P. Atoms in Strong Light Fields [M]. Berlin:Springer-Verlag, 1985:78-81.

KELDYSH L V. Ionization in the field of a strong electromagnetic wave[J]. Sov. Phys. JETP , 1965, 20(5):1307-1314.

LANDAU L D, LIFSHITZ E M. The Classical Theory of Fields [M]. Oxford:Pergamon Press, 1962:63-72.

KAW P K, KULSRUD R M. Relativistic acceleration of charged particles by superintense laser beams[J]. Phys. Fluids , 1973, 16(2):321-328.

CORKUM P B, BURNETT N H, BRUNEL F. Above-threshold ionization in the long-wavelength limit[J]. Phys. Rev. Lett ., 1989, 62(11):1259-1262.

曹小龙, 车永莉, 姚建铨.双波泵浦非对称量子阱的光学整流效应[J].发光学报, 2016, 37(2):224-229.

CAO X L, CHE Y L, YAO J Q. Nonlinear optical rectification of asymmetric quantum well based on dual pump[J]. Chin. J. Lumin ., 2016, 37(2):224-229. (in Chinese)

CHENG C C, WRIGHT E M, MOLONEY J V. Generation of electromagnetic pulses from plasma channels induced by femtosecond light strings[J]. Phys. Rev. Lett ., 2001, 87(21):213001.

RODRIGUEZ G, SIDERS C W, GUO C, et al .. Coherent ultrafast MI-FROG spectroscopy of optical field ionization in molecular H 2 , N 2 , and O 2 [J]. IEEE J. Sel. Top. Quantum Electron , 2001, 7(4):579-591.

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