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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 4 — Feb. 14, 2011
  • pp: 2852–2857

Direct measurement of field-free molecular alignment by spatial (de)focusing effects

Yahui Feng, Haifeng Pan, Jia Liu, Cheng Chen, Jian Wu, and Heping Zeng  »View Author Affiliations

Optics Express, Vol. 19, Issue 4, pp. 2852-2857 (2011)

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Abstract: We directly measure the field-free molecular alignment of various room-temperature molecular gases based on alignment-induced spatial focusing and defocusing effects. By imaging the spatial profile of a time-delayed probe pulse with increased and decreased local intensity at the beam center, the parallel and perpendicular molecular alignments are clearly characterized. Meanwhile, the electronic Kerr effect, weak plasma contribution and field-free molecular alignment impact could be distinguished from the measured signals.

© 2011 OSA

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7100) Ultrafast optics : Ultrafast measurements

ToC Category:
Ultrafast Optics

Original Manuscript: December 6, 2010
Revised Manuscript: January 17, 2011
Manuscript Accepted: January 18, 2011
Published: January 31, 2011

Yahui Feng, Haifeng Pan, Jia Liu, Cheng Chen, Jian Wu, and Heping Zeng, "Direct measurement of field-free molecular alignment by spatial (de)focusing effects," Opt. Express 19, 2852-2857 (2011)

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