摘要Conical double frequency emission is investigated by femtosecond laser pulses at a wavelength of 800nm in a DKDP crystal. It is demonstrated that the sum frequency of incident wave and its scattering wave accounts for the conical double frequency emission. The gaps on the conical rings are observed and they are very sensitive to the propagation direction, and thus could be used to detect the small angle deviation of surface direction.
Abstract：Conical double frequency emission is investigated by femtosecond laser pulses at a wavelength of 800nm in a DKDP crystal. It is demonstrated that the sum frequency of incident wave and its scattering wave accounts for the conical double frequency emission. The gaps on the conical rings are observed and they are very sensitive to the propagation direction, and thus could be used to detect the small angle deviation of surface direction.
[1] Franken P A, Hill A E, Peters C W and Weinreich G 1961 Phys. Rev. Lett. 7 118 [2] Giordmaine J A 1962 Phys. Rev. Lett. 819 [3] Trebino R 1981 Appl. Opt. 20 2090 [4] Dou S X, Josse D and Zyss J 1990 J. Opt. Soc. Am. B 8 1732 [5] Dou S X, Josse D, Hierle R et al 1992 J. Opt. Soc.Am. B 9 687 [6] Wang Z P, Xu G B, Liu J H et al 2004 J. Opt. Soc.Am. B 20 1348 [7] Moscovich S, Arie A, Urneski R et al 2004 Opt.Express 12 2236 [8] Dou S X, Josse D and Zyss J 1992 J. Opt. Soc. Am. B 9 1312 [9] Zhang G J, Kinoshita T, Sasaki K, Goto Y and Nakayama M1990 Appl. Phys. Lett. 57 221 [10] Moller K D 1988 Optics (Millvalley, CA:University Science Book) [11] Barnes N P, Gettemy D J and Adhav R S 1982 J. Opt.Soc. Am. 72 895
2009, Vol. 26 
