Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma

doi:10.1088/1674-1056/25/8/084209

中国物理B ›› 2016, Vol. 25 ›› Issue (8): 84209-084209.doi: 10.1088/1674-1056/25/8/084209

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

Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma

Min Li(李敏), An-Yuan Li(李安原), Bo-Qu He(何泊衢), Shuai Yuan(袁帅), He-Ping Zeng(曾和平)

1 Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System(Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

收稿日期:2016-01-14 修回日期:2016-04-01 出版日期:2016-08-05 发布日期:2016-08-05
通讯作者: He-Ping Zeng E-mail:hpzeng@phy.ecnu.edu.cn
基金资助:
Project supported by the National Key Scientific Instrument Project, China (Grant No. 2012YQ150092), the National Basic Research Program of China (Grant No. 2011CB808105), the National Natural Science Foundation of China (Grant No. 11434005), China Postdoctoral Science Foundation (Grant No. 2014M560348), the National Natural Science Foundation of China (Grant No. 11504237), and the Shanghai Municipal Science and Technology Commission, China (Grant No. 14JC1401600).

Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma

Min Li(李敏)¹, An-Yuan Li(李安原)¹, Bo-Qu He(何泊衢)², Shuai Yuan(袁帅)¹, He-Ping Zeng(曾和平)^1,2

1 Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System(Ministry of Education), School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China

Received:2016-01-14 Revised:2016-04-01 Online:2016-08-05 Published:2016-08-05
Contact: He-Ping Zeng E-mail:hpzeng@phy.ecnu.edu.cn
Supported by:
Project supported by the National Key Scientific Instrument Project, China (Grant No. 2012YQ150092), the National Basic Research Program of China (Grant No. 2011CB808105), the National Natural Science Foundation of China (Grant No. 11434005), China Postdoctoral Science Foundation (Grant No. 2014M560348), the National Natural Science Foundation of China (Grant No. 11504237), and the Shanghai Municipal Science and Technology Commission, China (Grant No. 14JC1401600).

摘要/Abstract

摘要：

We demonstrate spectral modulation of third-harmonic generation from molecular alignment effects. The third harmonic spectrum is broadened or narrowed under different influences of cross-phase modulations originating from various molecular alignment revivals. Furthermore, the spectrum and spatial distribution of the generated third harmonic pulse change dramatically in the presence of a preformed plasma. Under the influence of a preformed plasma, a narrower third harmonic spectrum is observed, and the conical third-harmonic pulse increases while the axial part decreases. The investigation provides an effective method to modulate the spectral characteristic and spatial distribution of third-harmonic generation from intense femtosecond filament.

关键词: third-harmonic generation, laser filament, molecular alignment

Abstract:

Key words: third-harmonic generation, laser filament, molecular alignment

中图分类号: (Nonlinear optics)

42.65.-k

52.38.-r (Laser-plasma interactions) 42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)

李敏, 李安原, 何泊衢, 袁帅, 曾和平. Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma[J]. 中国物理B, 2016, 25(8): 84209-084209.

Min Li(李敏), An-Yuan Li(李安原), Bo-Qu He(何泊衢), Shuai Yuan(袁帅), He-Ping Zeng(曾和平). Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma[J]. Chin. Phys. B, 2016, 25(8): 84209-084209.

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Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma

Spectral modulation of third-harmonic generation by molecular alignment and preformed plasma

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