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Numerical studies on terahertz radiation generated from two-color laser pulse interaction with gas targets

Published online by Cambridge University Press:  15 December 2011

H.W. Du ,
M. Chen ,
Z.M. Sheng  and
J. Zhang
H.W. Du
Affiliation:
Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai JiaoTong University, Shanghai, China
M. Chen
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, California
Z.M. Sheng*
Affiliation:
Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai JiaoTong University, Shanghai, China Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing, China Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou, China
J. Zhang
Affiliation:
Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai JiaoTong University, Shanghai, China Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing, China
*
Address correspondence and reprint requests to: Z. M. Sheng, Department of Physics, Shanghai JiaoTong University, Shanghai 200240, China. E-mail: zmsheng@sjtu.edu.cn
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Abstract

Based upon the Ammosov-Delone-Krainov ionization model, it is shown that two-color laser interaction with neutral gas generates strong ionization currents, which lead to electromagnetic emission at terahertz frequency when the gas density is at proper values. The emission efficiency depends on the difference of the phases between the fundamental and its second harmonic. The intensity ratio between the two pulses also affects the emission strength. An optimum intensity ratio has been found within our parameter region. The above ionization current theory is in agreement with one-dimensional particle-in-cell simulations with field ionization included.

Keywords

Ionization currentParticle-in-cell simulationTerahertz-wave emission
Type
Research Article
Information
Laser and Particle Beams , Volume 29 , Issue 4 , December 2011 , pp. 447 - 452
Copyright
Copyright © Cambridge University Press 2011

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References

REFERENCES

Amico, C.D., Houard, A., Franco, M., Prade, B. & Mysyrowicz, A. (2007). Conical forward THz emission from femtosecond-laser-beam filamentation in air. Phys. Rev. Lett. 98, 235002.Google Scholar
Augst, S., Strickland, D., Meyerhofer, D.D., Chin, S.L. & Eberly, J.H. (1989). Tunneling ionization of noble gases in a high intensity laser field. Phys. Rev. Lett. 63, 2212–2215.CrossRefGoogle Scholar
Bartel, T., Gaal, P., Reimann, K., Woerner, M. & Elsaesser, T. (2005). Generation of single-cycle THz transients with high electric-field amplitudes. Opt. Lett. 30, 2805–2807.CrossRefGoogle ScholarPubMed
Chen, M., Pukhov, A., Peng, X.Y. & Willi, O. (2008 a). Theoretical analysis and simulations of strong terahertz radiation from the interaction of ultrashort laser pulses with gases. Phys. Rev. E 78, 046406/1–7CrossRefGoogle ScholarPubMed
Chen, M., Sheng, Z.M., Zheng, J., Ma, Y.Y. & Zhang, J. (2008 b). Developments and applications of multi-dimensional particle-in-cell codes in the investigation of laser plasma interactions. Chin. J. Comput. Phys. 25, 43–50.Google Scholar
Cook, D.J. & Hochstrasser, R.M. (2000). Intense terahertz pulses by four-wave rectification in air. Opt. Lett. 25, 1210–1212.CrossRefGoogle ScholarPubMed
Dorranian, D., Ghoranneviss, M., Starodubtsev, M., Yugami, N. & Nishida, Y. (2005). Microwave emission from TW-100fs laser irradiation of gas jet. Laser Part. Beams, 23, 583–596.CrossRefGoogle Scholar
Hu, G.Y., Shen, B.F., Lei, A.L., Li, R.X. & Xu, Z.Z. (2010). Transition-Cherenkov radiation of terahertz generated by super-luminous ionization front in femtosecond laser filament. Laser Part. Beams 28, 399–407.Google Scholar
Kemp, A.J., Pfund, R.E.W. & Meyer-Ter-Vehn, J. (2004). Modeling ultrafast laser-driven ionization dynamics with Monte Carlo collisional particle-in-cell simulations. Phys. Plasmas 11, 5648–5657.CrossRefGoogle Scholar
Kim, K.Y., Glownia, J.H., Taylor, A.J. & Rodriguez, G. (2007). Terahertz emission from ultrafast ionizing air in symmetry-broken laser fields. Opt. Express 15, 4577–4584.CrossRefGoogle ScholarPubMed
Kress, M., Loffler, T., Eden, S., Thomson, M. & Roskos, H. (2004). Terahertz-pulse generation by photoionization of air with laser pulses composed of both fundamental and second-harmonic waves. Opt. Lett. 29, 1120–1122.CrossRefGoogle ScholarPubMed
Kress, M., Loffer, T., Thomson, M., Dorner, R., Gimpel, H., Zrost, K., Ergller, T., Moshammer, R., Morgner, U., Ullrich, J. & Roskos, H. (2006). Determination of the carrier-envelope phase of few-cycle laser pulses with terahertz-emission spectroscopy. Nat. Phys. 2, 327–330.CrossRefGoogle Scholar
Leemans, W.P., Gedddes, C.G.R., Faure, J., Toth, C.S., Tilborg, J., Schroeder, C.B., Esarey, E., Fubiani, G., Auerbach, D., Marcelis, , Carnahan, M.A., Kaindl, R.A., Byrd, J. & Martin, M.C. (2003). Observation of terahertz emission from a laser-plasma accelerated electron bunch crossing a plasma-vacuum boundary. Phys. Rev. Lett., 91, 074802/1–4.CrossRefGoogle Scholar
Penetrante, B.M. & Bardsley, J.N. (1991). Residual energy in plasmas produced by intense subpicosecond lasers. Phys. Rev. A 43, 3100–3116.CrossRefGoogle ScholarPubMed
Sheng, Z.M., Mima, K., Zhang, J. & Sanuki, H. (2005). Emission of electromagnetic pulses from laser wakefields through linear mode conversion. Phys. Rev. Lett., 94, 095003/1–4.CrossRefGoogle ScholarPubMed
Sheng, Z.M., Wu, H.C., Wang, W.M., Chen, M., Dong, X.G. & Zheng, J. (2008). Simulation of high power THz emission from laser interaction with tenuous plasma and gas targets. Comm. Comp. Phys. 4, 1258–1278.Google Scholar
Wu, H.C., Meyter-Ter-Vehn, J. & Sheng, Z.M. (2008). Phase-sensitive terahertz emission from gas targets irradiated by few-cycle laser pulses. New. J. Phys. 10, 043001/1–10.Google Scholar
Wang, W.M., Sheng, Z.M., Wu, H.C., Chen, M., Li, C., Zhang, J. & Mima, K. (2008). Strong terahertz pulse generation by chirped laser pulses in tenuous gases. Opt. Express 16, 16999–17007.Google Scholar
Xie, X., Dai, J.M. & Zhang, X.-C. (2006). Coherent control of THz wave generation in ambient air. Phys. Rev. Lett. 96, 075005/1–4.CrossRefGoogle ScholarPubMed