The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses

doi:10.1088/1674-1056/22/10/104207

中国物理B ›› 2013, Vol. 22 ›› Issue (10): 104207-104207.doi: 10.1088/1674-1056/22/10/104207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses

吴四清^{a b}, 刘劲松^a, 汪盛烈^a, 胡兵^a

a Wuhan National Laboratory for Optoelectronics，School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China;
b School of Electronic and Information Engineering, Hubei University of Science & Technology, Xianning 437100, China

收稿日期:2013-03-27 修回日期:2013-04-08 出版日期:2013-08-30 发布日期:2013-08-30
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61177095), the Natural Science Foundation of Hubei Province, China (Grant No. 2012FFA074), the Ph. D. Programs Foundation of Ministry of Education of China (Grant No. 20100142110042), and the Fundamental Research Funds for the Central Universities (Grant Nos. 2012QN094 and 2012QN097).

The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses

Wu Si-Qing (吴四清)^{a b}, Liu Jin-Song (刘劲松)^a, Wang Sheng-Lie (汪盛烈)^a, Hu Bing (胡兵)^a

a Wuhan National Laboratory for Optoelectronics，School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China;
b School of Electronic and Information Engineering, Hubei University of Science & Technology, Xianning 437100, China

Received:2013-03-27 Revised:2013-04-08 Online:2013-08-30 Published:2013-08-30
Contact: Liu Jin-Song E-mail:jsliu4508@vip.sina.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61177095), the Natural Science Foundation of Hubei Province, China (Grant No. 2012FFA074), the Ph. D. Programs Foundation of Ministry of Education of China (Grant No. 20100142110042), and the Fundamental Research Funds for the Central Universities (Grant Nos. 2012QN094 and 2012QN097).

摘要/Abstract

摘要： The generation of terahertz (THz) emission from air plasma induced by two-color femtosecond laser pulses is studied on the basis of a transient photocurrent model. While the gas is ionized by the two-color femtosecond laser-pulses composed of the fundamental and its second harmonic, a non-vanishing directional photoelectron current emerges, radiating a THz electromagnetic pulse. The gas ionization processes at three different laser-pulse energies are simulated, and the corresponding THz waveforms and spectra are plotted. The results demonstrate that, by keeping the laser-pulse width and the relative phase between two pulses invariant when the laser energy is at a moderate value, the emitted THz fields are significantly enhanced with a near-linear dependence on the optical energy.

关键词: terahertz emission, air plasma, femtosecond laser-pulses

Abstract: The generation of terahertz (THz) emission from air plasma induced by two-color femtosecond laser pulses is studied on the basis of a transient photocurrent model. While the gas is ionized by the two-color femtosecond laser-pulses composed of the fundamental and its second harmonic, a non-vanishing directional photoelectron current emerges, radiating a THz electromagnetic pulse. The gas ionization processes at three different laser-pulse energies are simulated, and the corresponding THz waveforms and spectra are plotted. The results demonstrate that, by keeping the laser-pulse width and the relative phase between two pulses invariant when the laser energy is at a moderate value, the emitted THz fields are significantly enhanced with a near-linear dependence on the optical energy.

Key words: terahertz emission, air plasma, femtosecond laser-pulses

中图分类号: (Laser spectroscopy)

42.62.Fi

42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 52.38.Dx (Laser light absorption in plasmas (collisional, parametric, etc.)) 52.25.Jm (Ionization of plasmas)

吴四清, 刘劲松, 汪盛烈, 胡兵. The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses[J]. 中国物理B, 2013, 22(10): 104207-104207.

Wu Si-Qing (吴四清), Liu Jin-Song (刘劲松), Wang Sheng-Lie (汪盛烈), Hu Bing (胡兵). The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses[J]. Chin. Phys. B, 2013, 22(10): 104207-104207.

参考文献 29

[1]	Hamster H, Sullivan A, Gordon S, White W and Falcone R W 1993 Phys. Rev. Lett. 71 2725
[2]	Hamster H, Sullivan A, Gordon S and Falcone R W 1994 Phys. Rev. E 49 671
[3]	Cook D J and Hochstrasser R M 2000 Opt. Lett. 25 1210
[4]	Kress M, Löffler T, Eden S, Thomson M and Roskos H G 2004 Opt. Lett. 29 1120
[5]	Xu J Z, Yuan T, Mickan S and Zhang X C 2003 Chin. Phys. Lett. 20 1266
[6]	Myriam B, Hao Z Q, Matthieu B, Yu J, Zhang Z and Zhang J 2007 Chin. Phys. Lett. 24 3466
[7]	Quan D H, Liu S L, Zhang L, Yang J, Wang L, Yang G Z and Weng Y X 2003 Chin. Phys. 12 986
[8]	Zhang X C and Xu J Z 2009 Introduction to THz Wave Photonics (New York: Springer)
[9]	Lei X L and Liu S Y 2001 Chin. Phys. 10 840
[10]	Karpowicz N and Zhang X C 2009 Phys. Rev. Lett. 102 093001
[11]	Dai J, Karpowicz N and Zhang X C 2009 Phys. Rev. Lett. 103 023001
[12]	Xie X, Dai J and Zhang X C 2006 Phys. Rev. Lett. 96 075005
[13]	Thomson M D, Kreß M, Löffler T and Roskos H G 2007 Laser Photon. Rev. 1 349
[14]	Federici J F 1991 IEEE Trans. Plasma Sci. 19 549
[15]	Kim K Y, Glownia J H, Taylor A J and Rodriguez G 2007 Opt. Express 15 4577
[16]	Kim K Y 2009 Phys. Plasmas 16 056706
[17]	Wang W M, Sheng Z M, Wu H C, Chen M, Li C, Zhang J and Mima K 2008 Opt. Express 16 16999
[18]	Wang W M, Kawata S, Sheng Z M, Li Y T and Zhang J 2011 Phys. Plasmas 18 073108
[19]	Wang W M, Sheng Z M, Li Y T, Chen L M, Dong Q L, Lu X, Ma J L and Zhang J 2011 Chin. Opt. Lett. 9 110002
[20]	Xie X, Dai J, Yamaguchi M and Zhang X C 2006 Proc. SPIE 6212 62120N
[21]	Rodriguez G and Dakovski G L 2010 Opt. Express 18 15130
[22]	Schumacher D W and Bucksbaum P H 1996 Phys. Rev. A 54 4271
[23]	Leemans W P, Clayton C E, Mori W B, Marsh K A, Kaw P K, Dyson A, Joshi C and Wallace J M 1992 Phys. Rev. A 46 1091
[24]	Corkum P B, Burnett N H and Brunel F 1989 Phys. Rev. Lett. 62 1259
[25]	Ammosov M V, Delone N B and Krainov V P 1986 Sov. Phys. JETP 64 1191
[26]	Corkum P B 1993 Phys. Rev. Lett. 71 1994
[27]	Rae S C and Burnett K 1992 Phys. Rev. A 46 1084
[28]	Delone N B and Krainov V P 1985 Atoms in Strong Light Fields (Berlin: Springer-Verlag)
[29]	Zhang K Y, Du H W, Chen M and Sheng Z M 2012 Acta Phys. Sin. 61 160701 (in Chinese)

The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses

The dependence on optical energy of terahertz emission from air plasma induced by two-color femtosecond laser-pulses

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