Resonant scanning preamplifer bandwidth

Posted by Heping Yuan on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Resonant-scanning-preamplifer-bandwidth-tp7584591.html

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Hello list users. I had a question about analog to digital conversion in resonant scanning two
photon microscopes. I have seen older discussions involving some users of the open source
ScanBox and ScanImage programs and they advocate for using sampling rates that match
with the Ti-Sapphire laser repetition rate (80 MHz). However, they also suggest using
preamplifiers with cutoffs that match this sampling rate (80 MHz). Should the preamplifier
not be at most half of the sampling rate to avoid aliasing? I believe there may be more
subtle details I am not aware of.

Thank you for your time.

Heping