In order to maximize the efficiency of nonlinear wavelength conversion it is sometimes necessary to place a doubling crystal or an OPO inside the cavity of a laser. The nonlinear conversion usually strongly modifies laser performance so in modeling both the laser and the nonlinear process must be included.
Similarly microchip lasers are often Q-switched using Cr doped YAG crystals inside the laser cavity. Modeling this laser requires treatment of both the laser medium and the saturable absorber medium.
We have experience in modeling these devices and can help you design your system to meet your requirements.