What is the equation for the penetration depth of laser photons when using a Raman microscope?

14 August 2022 0 2K Report

Hi, Does anyone have a good reference for an equation to estimate the maximum penetration depth of a 785 nm laser at 110 mw when using a x20 objective with 0.4 NA? I'm analysing quartz dust. All assistance appreciated. Thank you.

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