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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 18 — Aug. 29, 2011
  • pp: 17408–17412

Observation of non-odd order harmonics by sub-2-cycle laser pulses

Hao Teng, Chen-Xia Yun, Xin-Kui He, Wei Zhang, Li-Feng Wang, Min-Jie Zhan, Bing-bing Wang, and Zhi-Yi Wei  »View Author Affiliations

Optics Express, Vol. 19, Issue 18, pp. 17408-17412 (2011)

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High order harmonics generation from argon gas was comprehensively investigated by using multi-cycle and few-cycle laser pulses. Non-odd order harmonics were observed for sub-5-fs pulses, compare to the normal odd-order harmonics in the multi-cycle case. Theoretic analysis shows that the new spectral structure origins from the asymmetry of laser field in few-cycle pulses. This asymmetry induced both amplitude and phase difference between attosecond pulses from consecutive half-cycle of the laser field, which change the interference property of attosecond pulses and result in complex spectrum.

© 2011 OSA

OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(020.2649) Atomic and molecular physics : Strong field laser physics

ToC Category:
Nonlinear Optics

Original Manuscript: April 28, 2011
Revised Manuscript: June 10, 2011
Manuscript Accepted: August 8, 2011
Published: August 19, 2011

Hao Teng, Chen-Xia Yun, Xin-Kui He, Wei Zhang, Li-Feng Wang, Min-Jie Zhan, Bing-bing Wang, and Zhi-Yi Wei, "Observation of non-odd order harmonics by sub-2-cycle laser pulses," Opt. Express 19, 17408-17412 (2011)

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