摘要
圆锥形的双频率排放被 femtosecond 激光脉搏在 DKDP 晶体在 800 nm 的波长调查。事件的和频率飘动，这被表明，它的散布波浪说明圆锥形的双频率排放。圆锥形的戒指上的差距被观察，他们对繁殖方向很敏感，并且能因此被用来检测表面方向的小角度偏差。
Conical double frequency emission is investigated by femtosecond laser pulses at a wavelength of 80Ohm 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.
基金
Supported by the National Basic Research Program under Grant No 2006CB806007, and the National Natural Science Foundation of China under Grant Nos 10574006, 10634020 and 10821062, and the New Century Excellent Talent Project （NCET） of the Ministry of Education of China
