Shaping of few-cycle laser pulses via a subwavelength structure

doi:10.1088/1674-1056/22/9/094212

Abstract We theoretically investigate the propagation of few-cycle laser pulses in resonant two-level dense media with a subwavelength structure, which is described by the full Maxwell-Bloch equations without the frame of slowly varying envelope and rotating wave approximations. The input pulses can be shaped into shorter ones with a single or less than one optical cycle. The effect of the parameters of the subwavelength structure and laser pulses is studied. Our study shows that the media with a subwavelength structure can significantly shape the few-cycle pulses into a subcycle pulse, even for the case of chirp pulses as input fields. This suggests that such subwavelength structures have potential application in the shaping of few-cycle laser pulses.

Keywords: ultrashort pulses coherent propagation self-induced transparency

Received: 04 October 2012
Revised: 18 January 2013
Accepted manuscript online:

PACS:	42.65.Re	(Ultrafast processes; optical pulse generation and pulse compression)
	42.65.Tg	(Optical solitons; nonlinear guided waves)
	42.50.Gy	(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61008016 and 61108006), the Natural Science Basis Research Plan in Shaanxi Province of China (Grant No. 2010JQ1002), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20106101120020), and the Natural Science Foundation of Hubei Province, China (Grant No. 2011CDC155).

Corresponding Authors: Xie Xiao-Tao, Zhan Zhi-Ming
E-mail: xtxie@nwu.edu.cn; jasonzzm@tom.com

Cite this article:

Guo Liang (郭亮), Xie Xiao-Tao (谢小涛), Zhan Zhi-Ming (詹志明) Shaping of few-cycle laser pulses via a subwavelength structure 2013 Chin. Phys. B 22 094212

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