Does the laser beam mode affects on the PSF of an imaging system?

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Rajib Biswas

Dear Amir, PSF is influenced by laser beam mode.

Subir Das

Actually it depends on not only mode of the laser beam but also many other parameters . As far I know, transverse mode TEM00 is suitable for best PSF.

Amir Rahmani

Ok, I know, but how does the laser beam mode affects on PSF?

It is all about Fourier transform of truncated Gaussian function. The PSF is influenced by Gaussian apodization. If you use TEM01 or TEM10 mode then the affect on the truncated in the PSF will be more as compared to TEM00 mode.