Second harmonic generation in centrosymmetric gas with spatiotemporally focused intense femtosecond laser pulses

Guihua Li; Jielei Ni; Hongqiang Xie; Bin Zeng; Jinping Yao; Wei Chu; Haisu Zhang; Chenrui Jing; Fei He; Huailiang Xu; Ya Cheng; Zhizhan Xu

doi:10.1364/OL.39.000961

Second harmonic generation in centrosymmetric gas with spatiotemporally focused intense femtosecond laser pulses

Guihua Li
, Jielei Ni
, Hongqiang Xie
, Bin Zeng
, Jinping Yao
, Wei Chu
, Haisu Zhang
, Chenrui Jing
, Fei He
, Huailiang Xu
, Ya Cheng
, Zhizhan Xu

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

We demonstrate unexpectedly strong second harmonic generation (SHG) in argon gas by use of spatio-temporally focused (SF) femtosecond laser pulses. The resulting SHG by the SF scheme at a 75 cm distance shows a significantly enhanced efficiency than that achieved with conventional focusing schemes, which offers a new promising possibility for standoff applications. Our theoretical calculations reasonably reproduce the experimental observations, which indicate that the observed SHG mainly originates from the gradient of non-uniform plasma dynamically controlled by the SF laser field.

Original language	English
Pages (from-to)	961-964
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	4
DOIs	https://doi.org/10.1364/OL.39.000961
State	Published - 15 Feb 2014
Externally published	Yes

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title = "Second harmonic generation in centrosymmetric gas with spatiotemporally focused intense femtosecond laser pulses",

abstract = "We demonstrate unexpectedly strong second harmonic generation (SHG) in argon gas by use of spatio-temporally focused (SF) femtosecond laser pulses. The resulting SHG by the SF scheme at a 75 cm distance shows a significantly enhanced efficiency than that achieved with conventional focusing schemes, which offers a new promising possibility for standoff applications. Our theoretical calculations reasonably reproduce the experimental observations, which indicate that the observed SHG mainly originates from the gradient of non-uniform plasma dynamically controlled by the SF laser field.",

author = "Guihua Li and Jielei Ni and Hongqiang Xie and Bin Zeng and Jinping Yao and Wei Chu and Haisu Zhang and Chenrui Jing and Fei He and Huailiang Xu and Ya Cheng and Zhizhan Xu",

year = "2014",

month = feb,

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doi = "10.1364/OL.39.000961",

language = "英语",

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TY - JOUR

T1 - Second harmonic generation in centrosymmetric gas with spatiotemporally focused intense femtosecond laser pulses

AU - Li, Guihua

AU - Ni, Jielei

AU - Xie, Hongqiang

AU - Zeng, Bin

AU - Yao, Jinping

AU - Chu, Wei

AU - Zhang, Haisu

AU - Jing, Chenrui

AU - He, Fei

AU - Xu, Huailiang

AU - Cheng, Ya

AU - Xu, Zhizhan

PY - 2014/2/15

Y1 - 2014/2/15

N2 - We demonstrate unexpectedly strong second harmonic generation (SHG) in argon gas by use of spatio-temporally focused (SF) femtosecond laser pulses. The resulting SHG by the SF scheme at a 75 cm distance shows a significantly enhanced efficiency than that achieved with conventional focusing schemes, which offers a new promising possibility for standoff applications. Our theoretical calculations reasonably reproduce the experimental observations, which indicate that the observed SHG mainly originates from the gradient of non-uniform plasma dynamically controlled by the SF laser field.

AB - We demonstrate unexpectedly strong second harmonic generation (SHG) in argon gas by use of spatio-temporally focused (SF) femtosecond laser pulses. The resulting SHG by the SF scheme at a 75 cm distance shows a significantly enhanced efficiency than that achieved with conventional focusing schemes, which offers a new promising possibility for standoff applications. Our theoretical calculations reasonably reproduce the experimental observations, which indicate that the observed SHG mainly originates from the gradient of non-uniform plasma dynamically controlled by the SF laser field.

UR - https://www.scopus.com/pages/publications/84897389019

U2 - 10.1364/OL.39.000961

DO - 10.1364/OL.39.000961

M3 - 文章

AN - SCOPUS:84897389019

SN - 0146-9592

VL - 39

SP - 961

EP - 964

JO - Optics Letters

JF - Optics Letters

IS - 4

ER -

Second harmonic generation in centrosymmetric gas with spatiotemporally focused intense femtosecond laser pulses

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