Sabaeian Mohammad, Jalil-Abadi Fatemeh Sedaghat, Rezaee Mostafa Mohammad, Motazedian Alireza
Opt Express. 2014 Oct 20;22(21):25615-28. doi: 10.1364/OE.22.025615.
A model describing the thermal effects in type II second harmonic generation (SHG) of Gaussian continuous-wave (CW) in a double-pass cavity is presented. The thermally induced phase mismatching (TIPM) along with thermal lensing was included in the classical SHG formalism through the interposing the heat and TIPM equations. To this end, eight equations were coupled together and solved simultaneously to reveal how the SHG is affected in time when heat is generated in the crystal. The model showed an excellent agreement with experimental data [Opt. Laser Tech.34, 333-336 (2002)]. Furthermore, a numerical procedure, which was developed in this work, is introduced for simultaneously solving the SHG, heat, and TIPM equations with home-used computing machines.
提出了一种描述双程腔中高斯连续波（CW）的II型二次谐波产生（SHG）热效应的模型。通过引入热方程和热致相位失配（TIPM）方程，热致相位失配（TIPM）和热透镜效应被纳入经典的SHG形式体系。为此，八个方程被耦合在一起并同时求解，以揭示当晶体中产生热量时SHG随时间的变化情况。该模型与实验数据[Opt. Laser Tech.34, 333 - 336 (2002)]显示出极好的一致性。此外，本文还介绍了一种在这项工作中开发的数值方法，用于使用家用计算机同时求解SHG、热和TIPM方程。
