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

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.

Keywords: terahertz emission air plasma femtosecond laser-pulses

Received: 27 March 2013
Revised: 08 April 2013
Accepted manuscript online:

PACS:	42.62.Fi	(Laser spectroscopy)
	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)

Fund: 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).

Corresponding Authors: Liu Jin-Song
E-mail: jsliu4508@vip.sina.com

Cite this article:

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 2013 Chin. Phys. B 22 104207

[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)

[1]	Influences of substrate temperature on microstructure and corrosion behavior of APS Ni₅₀Ti₂₅Al₂₅ inter-metallic coating Sh Khandanjou, M Ghoranneviss, Sh Saviz, M Reza Afshar. Chin. Phys. B, 2018, 27(2): 028104.
[2]	Dense pair plasma generation by two laser pulses colliding in a cylinder channel Jian-Xun Liu(刘建勋), Yan-Yun Ma(马燕云), Tong-Pu Yu(余同普), Jun Zhao(赵军), Xiao-Hu Yang(杨晓虎), De-Bin Zou(邹德滨), Guo-Bo Zhang(张国博), Yuan Zhao(赵媛), Jing-Kang Yang(杨靖康), Han-Zhen Li(李汉臻), Hong-Bin Zhuo(卓红斌), Fu-Qiu Shao(邵福球), Shigeo Kawata. Chin. Phys. B, 2017, 26(3): 035202.
[3]	Determination of temporal structure of femtosecond laser pulses by means of the laser-induced air plasma Zhang Nan (张楠), Bao Wen-Xia (包文霞), Yang Jing-Hui (杨景辉), Zhu Xiao-Nong (朱晓农). Chin. Phys. B, 2013, 22(5): 054209.
[4]	Dynamical behaviour of transverse plasmons in pair plasmas Liu San-Qiu(刘三秋), Liu Yong(刘勇), and Li Xiao-Qing(李晓卿). Chin. Phys. B, 2011, 20(1): 015203.
[5]	Intraband dynamics and terahertz emission in biased semiconductor superlattices coupled to double far-infrared pulses Li Min(李敏) and Mi Xian-Wu(米贤武) . Chin. Phys. B, 2009, 18(12): 5534-5538.
[6]	Thomson scattering off a pair (electron--positron) plasma Zheng Jian (郑坚). Chin. Phys. B, 2006, 15(5): 1028-1034.
[7]	TERAHERTZ SPECTRA EMITTED FROM HOT CARRIERS IN TWO-DIMENSIONAL SEMICONDUCTORS Lei Xiao-lin (雷啸霖), Liu Shi-yong (刘世勇). Chin. Phys. B, 2001, 10(9): 840-843.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

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

Cite this article:

Online attention