Zhu Ding, Zhang Chao, Qin Yi-qiang, Zhu Yong-yuan
National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Aug;86(2 Pt 2):026602. doi: 10.1103/PhysRevE.86.026602. Epub 2012 Aug 6.
A general theory for multiple quasi-phase-matched third-harmonic generation is investigated systematically. We find that there are up to 24 configurations for third-harmonic generation by cascaded two-parametric processes. All these configurations can be divided into three categories based on the coupling types of the harmonic fields. Each category has a set of coupled wave equations that describe its characteristics. The analytical solutions reveal some features, such as the polarization tuning and quasi-phase-matched gap effect.
系统地研究了多准相位匹配三次谐波产生的一般理论。我们发现，通过级联双参量过程产生三次谐波最多有24种配置。基于谐波场的耦合类型，所有这些配置可分为三类。每一类都有一组描述其特性的耦合波动方程。解析解揭示了一些特性，如偏振调谐和准相位匹配间隙效应。
