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

被引：104

作者：

Kadlec, F

Kuzel, P

Coutaz, JL

机构：

[1] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[2] Univ savoie, Lab Hyderfrequences & Caracterisat, F-73376 Le Bourget du Lac, France

来源：

OPTICS LETTERS | 2005年 / 30卷 / 11期

关键词：

D O I：

10.1364/OL.30.001402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 run, which gives evidence of the nonlocal character of the response. The variation of incidence angle allows us to estimate the components of susceptibility tensor X-ijk((2)). For thicker films and near grazing incidence, the emitted THz field attains a peak value of 4 kV/cm. (c) 2005 Optical Society of America

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页码：1402 / 1404

页数：3

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