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Generation of terahertz radiation from beating of two intense cosh-Gaussian laser beams in magnetized plasma

Published online by Cambridge University Press:  14 October 2019

Gunjan Purohit Open the ORCID record for Gunjan Purohit [Opens in a new window] ,
Vinod Rawat  and
Priyanka Rawat
Gunjan Purohit*
Affiliation:
Department of Physics, D.A.V. (P.G) College, Dehradun, Uttarakhand248001, India
Vinod Rawat
Affiliation:
Department of Physics, Government Post Graduate College, Dakpatthar, Uttarakhand248125, India
Priyanka Rawat
Affiliation:
Department of Physics, D.A.V. (P.G) College, Dehradun, Uttarakhand248001, India
*
Author for correspondence: G. Purohit, Department of Physics, D.A.V. (P.G) College, Dehradun, Uttarakhand248001, India. E-mail: [email protected]
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Abstract

An analytical and numerical study has been carried out for the generation of terahertz (THz) radiation by beating of two intense cosh-Gaussian laser beams (decentered Gaussian beams) in the rippled density magnetized plasma under the relativistic–ponderomotive regime. In this process, both laser beams exert a relativistic–ponderomotive force on plasma electrons at the beat frequency and impart them an oscillatory velocity in the presence of a static magnetic field. Due to coupling between this nonlinear oscillatory velocity with density ripple, nonlinear current is generated that excites the THz radiation at the different frequency. Higher-order paraxial-ray approximation (non-paraxial theory) has been used in this study. The effects of the decentered parameter, magnetic field, and density ripple on the THz radiation generation in ripple density magnetized plasma have been investigated. Further, the effect of beating of laser beams on the THz field amplitude and the efficiency of THz radiation have been studied. The amplitude and efficiency of the emitted radiation are found to be highly sensitive to the decentered parameter, magnetic field, and density ripple. It has been found that the amplitude and efficiency of the generated THz radiation increase significantly with increasing the values of decentered parameter, magnetic field, and density ripple.

Keywords

Cosh-Gaussian laser beamscross-focusingmagnetized plasmarelativistic–ponderomotive nonlinearityterahertz radiation
Type
Research Article
Information
Laser and Particle Beams , Volume 37 , Issue 4 , December 2019 , pp. 415 - 427
Copyright
Copyright © Cambridge University Press 2019

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References

Abo-Bakr, M, Feikes, J, Holldack, K, Kuske, P, Peatman, WB, Schade, U, Wustefeld, G and Hubers, HW (2003) Brilliant, coherent far-infrared (THz) synchrotron radiation. Physical Review Letters 90, 094801.CrossRefGoogle ScholarPubMed
Amico, D, Houard, A, Akturk, S, Liu, Y, Le Bloas, J, Franco, M, Prade, B, Couairon, A, Tikhonchuk, VT and Mysyrowicz, A (2008) Forward THz radiation emission by femtosecond filamentation in gases: theory and experiment. New Journal of Physics 10, 013015.CrossRefGoogle Scholar
Antonsen, T Jr., Palastro, J and Milchberg, HM (2007) Excitation of terahertz radiation by laser pulses in nonuniform plasma channels. Physics of Plasmas 14, 033107.CrossRefGoogle Scholar
Bakhtiari, F, Golmohammady, S, Yousefi, M, Kashani, FD and Ghafary, B (2015 a) Generation of terahertz radiation in collisional plasma by beating of two dark hollow laser beams. Laser and Particle Beams 33, 463.CrossRefGoogle Scholar
Bakhtiari, F, Yousefi, M, Golmohammady, S, Jazayeri, SM and Ghafary, B (2015 b) Generation of terahertz radiation by beating of two circular flat-topped laser beams in collisional plasma. Laser and Particle Beams 33, 713.CrossRefGoogle Scholar
Bakhtiari, F, Esmaeilzadeh, M and Ghafary, B (2017) Terahertz radiation with high power and high efficiency in a magnetized plasma. Physics of Plasmas 24, 073112.CrossRefGoogle Scholar
Chen, ZY (2013) High field terahertz pulse generation from plasma wakefield driven by tailored laser pulses. Applied Physics Letters 102, 241104.CrossRefGoogle Scholar
Dong, XG, Sheng, ZM, Wu, HC, Wang, WM and Zhang, J (2009) Single-cycle strong terahertz pulse generation from a vacuum-plasma interface driven by intense laser pulses. Physical Review E 79, 046411.CrossRefGoogle ScholarPubMed
Federici, J and Moeller, L (2010) Review of terahertz and subterahertz wireless communications. Journal of Applied Physics 107, 111101.CrossRefGoogle Scholar
Ferguson, B and Zhang, XC (2002) Materials for terahertz science and technology. Nature Materials 1, 26.CrossRefGoogle ScholarPubMed
Gildenburg, VB and Vedenskii, V (2007) Optical-to-THz wave conversion via excitation of plasma oscillations in the tunneling-ionization process. Physical Review Letters 98, 245002.CrossRefGoogle ScholarPubMed
Gill, TS, Mahajan, R and Kaur, R (2011) Self-focusing of cosh-Gaussian laser beam in a plasma with weakly relativistic and ponderomotive regime. Physics of Plasmas 18, 033110.CrossRefGoogle Scholar
Gopal, A, May, T, Herzer, S, Reinhard, A, Minardi, S, Schubert, M, Dillner, U, Pradarutti, B, Polz, J, Gaumnitz, T, Kaluza, MC, Jäckel, O, Riehemann, S, Ziegler, W, Gemuend, HP, Meyer, HG and Paulus, GG (2012) Observation of energetic terahertz pulses from relativistic solid density plasmas. New Journal of Physics 14, 083012.CrossRefGoogle Scholar
Hafez, HA, Chai, X, Ibrahim, A, Mondal, S, Férachou, D, Ropagnol, X and Ozaki, T (2016) Intense terahertz radiation and their applications. Journal of Optics 18, 093004.CrossRefGoogle Scholar
Hamster, H, Sullivan, A, Gordon, S, White, W and Falcone, RW (1993) Sub picosecond, electromagnetic pulses from intense laser-plasma interaction. Physical Review Letters 71, 2725.CrossRefGoogle Scholar
Hamster, H, Sullivan, A, Gordon, S and Falcone, RW (1994) Short-pulse terahertz radiation from high-intensity-laser-produced plasmas. Physical Review E 49, 671.CrossRefGoogle ScholarPubMed
Houard, A, Liu, Y, Prade, B, Tikhonchuk, VT and Mysyrowicz, A (2008) Strong enhancement of terahertz radiation from laser filaments in air by a static electric field. Physical Review Letters 100, 255006.CrossRefGoogle ScholarPubMed
Hussain, S, Singh, RK and Sharma, RP (2016) Terahertz radiation generation by beating of two super Gaussian lasers in plasma having static DC electric field. Physics of Plasmas 23, 073120.CrossRefGoogle Scholar
Jahangiri, F, Hashida, M, Tokita, S, Nagashima, T, Hangyo, M and Sakabe, S (2013) Enhancing the energy of terahertz radiation from plasma produced by intense femtosecond laser pulses. Applied Physics Letters 102, 191106.CrossRefGoogle Scholar
Jha, P and Verma, NK (2014) Numerical and simulation study of terahertz radiation generation by laser pulses propagating in the extraordinary mode in magnetized plasma. Physics of Plasmas 21, 063106.CrossRefGoogle Scholar
Konar, S, Mishra, M and Jana, S (2007) Nonlinear evolution of cosh-Gaussian laser beams and generation of flat top spatial solitons in cubic quintic nonlinear media. Physics Letters A 362, 505.CrossRefGoogle Scholar
Kumar, S, Singh, RK and Sharma, RP (2015) Terahertz generation by relativistic ponderomotive focusing of two co-axial Gaussian laser beams propagating in ripple density plasma. Physics of Plasmas 22, 103101.CrossRefGoogle Scholar
Kumar, S, Singh, RK and Sharma, RP (2016) Terahertz generation by intense femtosecond Gaussian laser pulse in ripple density plasma. IEEE Transactions on Plasma Science 44, 769.CrossRefGoogle Scholar
Kuo, CC, Pai, CH, Lin, MW, Lee, KH, Lin, JY, Wang, J and Chen, SY (2007) Enhancement of relativistic harmonic generation by an optically preformed periodic plasma waveguide. Physical Review Letters 98, 033901.CrossRefGoogle ScholarPubMed
Layer, BD, York, A, Antonson, TM, Varma, S, Chen, YH, Lengand, Y and Milchberg, HM (2007) Ultrahigh-intensity optical slow-wave structure. Physical Review Letters 99, 035001.CrossRefGoogle ScholarPubMed
Li, C, Zhou, ML, Ding, WJ, Du, F, Liu, F, Li, YT, Wang, WM, Sheng, ZM, Ma, JL, Chen, LM, Lu, X, Dong, QL, Wang, ZH, Lou, Z, Shi, SC, Wei, ZY and Zhang, J (2011) Effects of laser-plasma interactions on terahertz radiation from solid targets irradiated by ultrashort intense laser pulse. Physical Review E 84, 036405.CrossRefGoogle Scholar
Li, YT, Li, C, Zhou, ML, Wang, WM, Du, F, Ding, WJ, Lin, XX, Liu, F, Sheng, ZM, Peng, XY, Chen, LM, Ma, JL, Lu, X, Wang, ZH, Wei, ZY and Zhang, J (2012) Strong terahertz radiation from relativistic laser interaction with solid density plasmas. Applied Physics Letters 100, 25410.Google Scholar
Liao, GQ, Li, YT, Li, C, Su, LN, Zheng, Y, Liu, M, Wang, WM, Hu, ZD, Yan, WC, Dunn, J, Nilsen, J, Hunter, J, Liu, Y, Wang, X, Chen, LM, Ma, JL, Lu, X, Jin, Z, Kodama, R, Sheng, ZM and Zhang, J (2015) Bursts of terahertz radiation from large-scale plasmas irradiated by relativistic picosecond laser pulses. Physical Review Letters 114, 255001.CrossRefGoogle ScholarPubMed
Liao, GQ, Li, YT, Li, C, Liu, H, Zhang, YH, Jiang, WM, Yuan, XH, Nilsen, J, Ozaki, T, Wang, WM, Sheng, ZM, Neely, D, McKenna, P and Zhang, J (2017) Intense terahertz radiation from relativistic laser–plasma interactions. Plasma Physics and Controlled Fusion 59, 014039.CrossRefGoogle Scholar
Liu, C and Tripathi, VK (2001) Self-focusing and frequency broadening of an intense short-pulse laser in plasmas. Journal of the Optical Society of America A 18, 1714.CrossRefGoogle ScholarPubMed
Lu, B and Luo, S (2000) Beam propagation factor of hard-edge diffracted cosh-Gaussian beams. Optics Communications 178, 275.CrossRefGoogle Scholar
Malik, AK, Malik, HK and Nishida, Y (2011) Terahertz radiation generation by beating of two spatial Gaussian lasers. Physics Letters A 375, 1191.CrossRefGoogle Scholar
Malik, AK, Malik, HK and Stroth, U (2012) Terahertz radiation generation by beating of two spatial-Gaussian lasers in the presence of a static magnetic field. Physical Review E 85, 016401.CrossRefGoogle ScholarPubMed
Mann, KL, Sajal, V, Varshney, P and Sharma, NK (2017) Terahertz radiation generation by pulse slippage of Cosh-Gaussian lasers in a corrugated magnetized plasma. Physics of Plasmas 24, 123117.CrossRefGoogle Scholar
Miao, C, Palastro, JP and Antonsen, TM (2016) Laser pulse driven terahertz generation via resonant transition radiation in inhomogeneous plasmas. Physics of Plasmas 23, 063103.CrossRefGoogle Scholar
Mori, K, Hashida, M, Nagashima, T, Li, D, Teramoto, K, Nakamiya, Y, Inoue, S and Sakabe, S (2019) Increased energy of THz waves from a cluster plasma by optimizing laser pulse duration. AIP Advances 9, 015134.CrossRefGoogle Scholar
Niknam, AR, Banjafar, MR, Jahangiri, F, Barzegar, S and Massudi, R (2016) Resonant terahertz radiation from warm collisional inhomogeneous plasma irradiated by two Gaussian laser beams. Physics of Plasmas 23, 053110.CrossRefGoogle Scholar
Pai, CH, Huang, SY, Kuo, CC and Lin, JY (2005) Fabrication of spatial transient-density structures as high-field plasma photonic devices. Physics of Plasmas 12, 070707.CrossRefGoogle Scholar
Peñano, J, Sprangle, P, Hafizi, B, Gordon, D and Serafim, P (2010) Terahertz generation in plasmas using two-color laser pulses. Physical Review E 81, 026407.CrossRefGoogle ScholarPubMed
Pickwell, E and Wallace, VP (2006) Biomedical applications of terahertz technology. Journal of Physics D 39, R301.CrossRefGoogle Scholar
Purohit, G, Gaur, B and Rawat, P (2016) Propagation of two intense cosh-Gaussian laser beams in plasma in the relativistic-ponderomotive regime. Journal of the Optical Society of America B 33, 1716.CrossRefGoogle Scholar
Rawat, P, Singh, RK, Sharma, RP and Purohit, G (2014) Effects of relativistic and ponderomotive nonlinearties on the beat wave generation of electron plasma wave and particle acceleration in non-paraxial region. The European Physical Journal D 68, 57.CrossRefGoogle Scholar
Rawat, P, Rawat, V, Gaur, B and Purohit, G (2017) Generation of terahertz radiation by intense hollow Gaussian laser beam in magnetised plasma under relativistic-ponderomotive regime. Physics of Plasmas 24, 073113.CrossRefGoogle Scholar
Schroder, CB, Esarey, E, Van Tilbong, J and Leemans, WP (2004) Theory of coherent transition radiation generated at a plasma-vacuum interface. Physical Review E 69, 016501.CrossRefGoogle Scholar
Sharma, RP and Chauhan, P (2008) Nonparaxial theory of cross-focusing of two laser beams and its effects on plasma wave excitation and particle acceleration: relativistic case. Physics of Plasmas 15, 063103.CrossRefGoogle Scholar
Sharma, A and Tripathi, VK (2012) Relativistic and ponderomotive self-focusing of a laser pulse in magnetized plasma. Laser and Particle Beams 30, 659.CrossRefGoogle Scholar
Shen, YC, Lo, T, Taday, PF, Cole, BE, Tribe, WR and Kemp, WC (2005) Detection and identification of explosives using terahertz pulsed spectroscopic imaging. Applied Physics Letters 86, 241116.CrossRefGoogle Scholar
Sheng, ZM, Mima, K, Zhang, J and Sanuki, H (2005) Emission of electromagnetic pulses from laser wakefields through linear mode conversion. Physical Review Letters 94, 095003.CrossRefGoogle ScholarPubMed
Singh, RK and Sharma, RP (2014) Terahertz generation by two cross focused Gaussian laser beams in magnetized plasma. Physics of Plasmas 21, 113109.CrossRefGoogle Scholar
Singh, M, Mahmoud, ST and Sharma, RP (2012) Generation of THz radiation from laser beam filamentation in a magnetized plasma. Contributions to Plasma Physics 52, 243.CrossRefGoogle Scholar
Singh, M, Singh, RK and Sharma, RP (2013) THz generation by cosh-Gaussian lasers in a rippled density plasma. EPL (Europhysics Letters) 104, 35002.CrossRefGoogle Scholar
Sodha, MS and Faisal, F (2008) Propagation of high-power electromagnetic beams in overdense plasmas: Higher order paraxial theory. Physics of Plasmas 15, 033102.CrossRefGoogle Scholar
Sprangle, P, Penano, JR, Hafizi, B and Kapetanakos, CA (2004) Ultrashort laser pulses and electromagnetic pulse generation in air and on dielectric surfaces. Physical Review E 69, 066415.CrossRefGoogle ScholarPubMed
Tooth, C, van Tilborg, J, Geddes, CGR, Fubiani, G, Schroeder, CB, Esarey, E, Faure, J, Dugan, G and Leemans, WP (2004) Powerful pulsed THz radiation from laser-accelerated relativistic electron bunches. Proceedings of SPIE 5448, 491.CrossRefGoogle Scholar
Tzortzakis, S, Mechhain, G, Patalano, G, Andre, YB, Prade, B, Franco, M, Mysyrowicz, A, Munier, JM, Gheudin, M, Beaudin, G and Encrenaz, P (2002) Coherent subterahertz radiation from femtosecond infrared filaments in air. Optics Letters 27, 1944.CrossRefGoogle ScholarPubMed
Varaki, MA and Jafari, S (2018) Enhanced THz radiation from beating of two cosh–Gaussian laser beams in a wiggler-assisted collisional magnetized plasma. Journal of the Optical Society of America B 35, 1165.CrossRefGoogle Scholar
Varshney, P, Upadhayay, A, Madhubabu, K, Sajal, V and Chakera, JA (2018) Strong terahertz radiation generation by cosh-Gaussian laser beams in axially magnetized collisional plasma under non-relativistic ponderomotive regime. Laser and Particle Beams 36, 236.CrossRefGoogle Scholar
Yoshii, J, Lai, CH, Katsouleas, T, Joshi, C and Mori, WB (1997) Radiation from Cerenkov Wakes in a magnetized plasma. Physical Review Letters 79, 4194.CrossRefGoogle Scholar
Yu Tong, L, Wei-Min, W, Chun, L and Zheng-Ming, S (2012) High power terahertz pulses generated in intense laser–plasma interactions. Chinese Physics B 21, 095203.Google Scholar
Zhou, G (2011) Propagation of a higher-order cosh-Gaussian beam in turbulent atmosphere. Optics Express 19, 394.CrossRefGoogle ScholarPubMed