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Optics Letters

Optics Letters

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  • Vol. 30, Iss. 11 — Jun. 1, 2005
  • pp: 1402–1404

Study of terahertz radiation generated by optical rectification on thin gold films

Filip Kadlec, Petr Kuzel, and Jean-Louis Coutaz  »View Author Affiliations


Optics Letters, Vol. 30, Issue 11, pp. 1402-1404 (2005)
http://dx.doi.org/10.1364/OL.30.001402


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Abstract

Emission of terahertz (THz) radiation as a result of optical rectification of intense femtosecond laser pulses on thin gold films has been studied by time-domain THz spectroscopy. The THz amplitude was measured as a function of film thickness and incidence angle. The experiments reveal that the emitted THz field is suppressed for a thickness below 100 nm, which gives evidence of the nonlocal character of the response. The variation of incidence angle allows us to estimate the components of susceptibility tensor chi^(2) _ijk. For thicker films and near grazing incidence, the emitted THz field attains a peak value of 4 kV/cm.

© 2005 Optical Society of America

OCIS Codes
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Citation
Filip Kadlec, Petr Kuzel, and Jean-Louis Coutaz, "Study of terahertz radiation generated by optical rectification on thin gold films," Opt. Lett. 30, 1402-1404 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-11-1402

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