Higher-order harmonics of general limited diffraction Bessel beams
De-Sheng Ding(丁德胜)1, Jin-Huang Huang(黄锦煌)2
1. School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China;
2. Department of Mechanical and Computer-Aided Engineering, Feng Chia University, Taichung 40724, Taiwan, China
In this paper, we extensively study the higher-order harmonic generation of the general limited diffraction m-th-order Bessel beam. The analysis is based on successive approximations of the Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation. Asymptotic expansions are presented for higher-order harmonic Bessel beams in near and far fields. The validity of asymptotic approximation is also analyzed. The higher-order harmonic of the Bessel beam with the lowest zero-order is taken as a special example.
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