Third-harmonic generation in relative-phase-controlled two-color laser field

H. Xu; W. Chu; Y. Liu; W. Liu; H. Xiong; Y. Fu; J. Yao; B. Zeng; J. Ni; S. L. Chin; Y. Cheng; Z. Xu

doi:10.1007/s00340-011-4531-2

Third-harmonic generation in relative-phase-controlled two-color laser field

H. Xu, W. Chu, Y. Liu, W. Liu, H. Xiong, Y. Fu, J. Yao, B. Zeng, J. Ni, S. L. Chin, Y. Cheng, Z. Xu

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

8 Scopus citations

Abstract

We experimentally demonstrate third-harmonic generation (THG) by intense femtosecond laser pulse at a central wavelength of ∼800 nm superposed by its second harmonic in air. The third-harmonic signal shows a periodic modulation with a period of ∼0.67 fs when the delay between fundamental and second-harmonic wave is continuously changed. The periodic modulation of THG can be attributed to the interference of third-harmonic signals generated from a direct THG channel (3ω=ω+ω+ω) and a four-wave mixing (FWM) channel (3ω=2ω+2ω-ω). With high pump intensity, the fitting of the measured TH spectrum as a function of delay implies that the pump pulse undergoes a strong pulse splitting and self-phase modulation at the focus.

Original language	English
Pages (from-to)	909-912
Number of pages	4
Journal	Applied Physics B: Lasers and Optics
Volume	104
Issue number	4
DOIs	https://doi.org/10.1007/s00340-011-4531-2
State	Published - Sep 2011
Externally published	Yes

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title = "Third-harmonic generation in relative-phase-controlled two-color laser field",

abstract = "We experimentally demonstrate third-harmonic generation (THG) by intense femtosecond laser pulse at a central wavelength of ∼800 nm superposed by its second harmonic in air. The third-harmonic signal shows a periodic modulation with a period of ∼0.67 fs when the delay between fundamental and second-harmonic wave is continuously changed. The periodic modulation of THG can be attributed to the interference of third-harmonic signals generated from a direct THG channel (3ω=ω+ω+ω) and a four-wave mixing (FWM) channel (3ω=2ω+2ω-ω). With high pump intensity, the fitting of the measured TH spectrum as a function of delay implies that the pump pulse undergoes a strong pulse splitting and self-phase modulation at the focus.",

author = "H. Xu and W. Chu and Y. Liu and W. Liu and H. Xiong and Y. Fu and J. Yao and B. Zeng and J. Ni and Chin, \{S. L.\} and Y. Cheng and Z. Xu",

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T1 - Third-harmonic generation in relative-phase-controlled two-color laser field

AU - Xu, H.

AU - Chu, W.

AU - Liu, Y.

AU - Liu, W.

AU - Xiong, H.

AU - Fu, Y.

AU - Yao, J.

AU - Zeng, B.

AU - Ni, J.

AU - Chin, S. L.

AU - Cheng, Y.

AU - Xu, Z.

PY - 2011/9

Y1 - 2011/9

N2 - We experimentally demonstrate third-harmonic generation (THG) by intense femtosecond laser pulse at a central wavelength of ∼800 nm superposed by its second harmonic in air. The third-harmonic signal shows a periodic modulation with a period of ∼0.67 fs when the delay between fundamental and second-harmonic wave is continuously changed. The periodic modulation of THG can be attributed to the interference of third-harmonic signals generated from a direct THG channel (3ω=ω+ω+ω) and a four-wave mixing (FWM) channel (3ω=2ω+2ω-ω). With high pump intensity, the fitting of the measured TH spectrum as a function of delay implies that the pump pulse undergoes a strong pulse splitting and self-phase modulation at the focus.

AB - We experimentally demonstrate third-harmonic generation (THG) by intense femtosecond laser pulse at a central wavelength of ∼800 nm superposed by its second harmonic in air. The third-harmonic signal shows a periodic modulation with a period of ∼0.67 fs when the delay between fundamental and second-harmonic wave is continuously changed. The periodic modulation of THG can be attributed to the interference of third-harmonic signals generated from a direct THG channel (3ω=ω+ω+ω) and a four-wave mixing (FWM) channel (3ω=2ω+2ω-ω). With high pump intensity, the fitting of the measured TH spectrum as a function of delay implies that the pump pulse undergoes a strong pulse splitting and self-phase modulation at the focus.

UR - https://www.scopus.com/pages/publications/80053560490

U2 - 10.1007/s00340-011-4531-2

DO - 10.1007/s00340-011-4531-2

M3 - 文章

AN - SCOPUS:80053560490

SN - 0946-2171

VL - 104

SP - 909

EP - 912

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 4

ER -

Third-harmonic generation in relative-phase-controlled two-color laser field

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