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All-optical ultrafast polarization switching of terahertz radiation by impulsive molecular alignment |
Optics Letters, Vol. 36, Issue 18, pp. 3633-3635 (2011)
http://dx.doi.org/10.1364/OL.36.003633
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Abstract
We experimentally demonstrate ultrafast polarization switching of terahertz (THz) radiation generated by dual-color driving pulses composed of orthogonally polarized fundamental and second-harmonic waves, which can be controlled by field-free molecular alignment in air by modulating the relative phase between the two field components as a transient dynamic wave plate. By fine-tuning the time delay to properly match the molecular alignment revivals, a significant polarization modulation of the THz radiation is observed and both linearly and elliptically polarized THz radiations can be obtained.
© 2011 Optical Society of America
OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
(020.2649) Atomic and molecular physics : Strong field laser physics
ToC Category:
Ultrafast Optics
History
Original Manuscript: June 6, 2011
Revised Manuscript: July 29, 2011
Manuscript Accepted: August 21, 2011
Published: September 14, 2011
Citation
Min Li, Haifeng Pan, Yuqi Tong, Cheng Chen, Yi Shi, Jian Wu, and Heping Zeng, "All-optical ultrafast polarization switching of terahertz radiation by impulsive molecular alignment," Opt. Lett. 36, 3633-3635 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3633
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