Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields

doi:10.1088/1674-1056/24/5/054210

中国物理B ›› 2015, Vol. 24 ›› Issue (5): 54210-054210.doi: 10.1088/1674-1056/24/5/054210

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

Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields

薛山, 杜洪川, 夏月, 胡碧涛

School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

收稿日期:2014-08-23 修回日期:2014-11-07 出版日期:2015-05-05 发布日期:2015-05-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grants Nos. 11404153, 11175076, 11135002, and 11405077) and the Fundamental Research Funds for the Central Universities of China (Grant Nos. lzujbky-2014-10, lzujbky-2014-13, and lzujbky-2014-14).

Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields

Xue Shan (薛山), Du Hong-Chuan (杜洪川), Xia Yue (夏月), Hu Bi-Tao (胡碧涛)

School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China

Received:2014-08-23 Revised:2014-11-07 Online:2015-05-05 Published:2015-05-05
Contact: Du Hong-Chuan, Hu Bi-Tao E-mail:duhch@lzu.edu.cn;hubt@lzu.edu.cn
About author:42.65.Ky; 42.65.Re; 78.67.Bf; 33.20.Xx
Supported by:
Project supported by the National Natural Science Foundation of China (Grants Nos. 11404153, 11175076, 11135002, and 11405077) and the Fundamental Research Funds for the Central Universities of China (Grant Nos. lzujbky-2014-10, lzujbky-2014-13, and lzujbky-2014-14).

摘要/Abstract

摘要：

We theoretically investigate high-order harmonic generation in a two-color multi-cycle inhomogeneous field combined with a 27th harmonic pulse. By considering a bowtie-shaped gold nanostructure, the spatiotemporal profiles of enhanced plasmonic fields are obtained by solving the Maxwell equation using finite-domain time-difference method. Based on quantum-mechanical and classical models, the effect of 27th harmonic pulse, temporal profile of enhanced plasmonic field and inhomogeneity on supercontinuum generation are analyzed and discussed. As a result, broadband supercontinuum can be generated from our approach with optimized gap size of nanostructure. Moreover, these results are not sensitively dependent on the relative phase in the two-color field.

关键词: surface plasmon resonances, high-order harmonics, attosecond pulse, 27th harmonic pulse

Abstract:

Key words: surface plasmon resonances, high-order harmonics, attosecond pulse, 27th harmonic pulse

中图分类号: (Frequency conversion; harmonic generation, including higher-order harmonic generation)

42.65.Ky

42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters) 33.20.Xx (Spectra induced by strong-field or attosecond laser irradiation)

薛山, 杜洪川, 夏月, 胡碧涛. Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields[J]. 中国物理B, 2015, 24(5): 54210-054210.

Xue Shan (薛山), Du Hong-Chuan (杜洪川), Xia Yue (夏月), Hu Bi-Tao (胡碧涛). Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields[J]. Chin. Phys. B, 2015, 24(5): 54210-054210.

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Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields

Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields

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