Shaping of few-cycle laser pulses via a subwavelength structure

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

中国物理B ›› 2013, Vol. 22 ›› Issue (9): 94212-094212.doi: 10.1088/1674-1056/22/9/094212

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

Shaping of few-cycle laser pulses via a subwavelength structure

郭亮^a, 谢小涛^a, 詹志明^b

a Department of Physics, Northwest University, Xi’an 710069, China;
b School of Physics and Information Engineering, Jianghan University, Wuhan 430056, China

收稿日期:2012-10-04 修回日期:2013-01-18 出版日期:2013-07-26 发布日期:2013-07-26
基金资助:
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).

Shaping of few-cycle laser pulses via a subwavelength structure

Guo Liang (郭亮)^a, Xie Xiao-Tao (谢小涛)^a, Zhan Zhi-Ming (詹志明)^b

a Department of Physics, Northwest University, Xi’an 710069, China;
b School of Physics and Information Engineering, Jianghan University, Wuhan 430056, China

Received:2012-10-04 Revised:2013-01-18 Online:2013-07-26 Published:2013-07-26
Contact: Xie Xiao-Tao, Zhan Zhi-Ming E-mail:xtxie@nwu.edu.cn; jasonzzm@tom.com
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: ultrashort pulses, coherent propagation, self-induced transparency

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.

Key words: ultrashort pulses, coherent propagation, self-induced transparency

中图分类号: (Ultrafast processes; optical pulse generation and pulse compression)

42.65.Re

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)

郭亮, 谢小涛, 詹志明. Shaping of few-cycle laser pulses via a subwavelength structure[J]. 中国物理B, 2013, 22(9): 94212-094212.

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[J]. Chin. Phys. B, 2013, 22(9): 94212-094212.

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Shaping of few-cycle laser pulses via a subwavelength structure

Shaping of few-cycle laser pulses via a subwavelength structure

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