Anyone in the community has experience using the Santec SLM-200? It is a phase-only SLM and comes with a wavefront correction file to correct for the non-uniformity of the substrate.
When I uploaded the wavefront correction pattern (Mod 2Pi pattern displaying gray_scale in value from 0 to 1024) using their GUI, I saw the pattern on the beam like this (filename: wavefront_correct_SLM200-GUI). I am confused as I thought it will actually correct for the non-flatness of the phase-front and therefore when I upload the pattern the beam reflected from the SLM should be nearly Gaussian, like a normal mirror.
But when I try to upload the same file via their SDK in Matlab using their Disp_Data, it gave a completely different pattern on the beam which looks more like flat, as in the second file.
I would appreciate if anyone can shed some light on this. At the moment I am using this wavefront correction is the way that if I want to upload a pattern X on the SLM, then the final gray_scale array is Mod(X + wavefront_correction, 1024), is that correct?
Thank you for your help.
A
Dear Linh Viet Nguyen
This manual might help, have a look: https://manualzz.com/doc/56083087/santec-lcos-slm--lcos-slm-slm-200--slm-250-operational-ma...
Kind Regards
Qamar Ul Islam
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