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Saturation of the absorption coefficient

Elizaveta Andreevna Kozlova

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Hello everybody,

I want to simulate the temperature distribution in a crystal under laser radiation. How can I account for the saturation effect of the absorption coefficient in the medium using the following formula: ?

where - saturated absorption coefficient [1/m] ; - unsaturated absorption coefficient [1/m]; - saturation intensity [W/m^2] ; - laser intensity [W/m^2]; - radial coordinate of the crystal; z - longtitudal coordinate.

And it should be taken into account that the intensity itself also changes along the entire crystal. This process can be described through Beer–Lambert law in differential form:

Thanks if anyone can help.


0 Replies Last Post Jul 8, 2022, 10:04 a.m. EDT
COMSOL Moderator

Hello Elizaveta Andreevna Kozlova

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