How to model harmonic generation
However Lumerical for example can correctly model this and interfaces with OpticStudio. The links below are webinars on using Lumerical with OpticStudio.
Zemax and Lumerical: Part 1 - from nano-scale to macro-scale optics and back - webinar
Zemax and Lumerical: Part 2 - from nano-scale to macro-scale optics and back - webinar
These particular webinars focus on beam files and complex fibers, but their help files detail modeling non-linear crystals as well.
Hi, I’m new to zemax. Could you explain your response Sandrine Auriol? I have a KTP crystal and I don’t know how to do the simulation. Many thanks.
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Harmonic generation is a two-photon process. Two photons do in at wavelength lambda and one emerges with wavelength 2*lambda. The two photons must be phase matched to conserve momentum.
Ray tracing models light as individual particles (not really photons) and there is no interaction between rays. So sadly, ray tracing cannot model non-linear, or multi-photon, effects.
Lumerical’s codes work with electric fields directly, so you can model a medium that has a non-linear relationship with field intensity.
- Mark
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