Re: Shearing Interferometer with Ti-Sapph

Posted by Mark Cannell-2 on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Shearing-Interferometer-with-Ti-Sapph-tp7585684p7585686.html

***** To join, leave or search the confocal microscopy listserv, go to: http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy Post images on http://www.imgur.com and include the link in your posting. ***** You could check the collimation with the Ti-S in CW mode (i.e. not mode locked)?

HTH

Mark

On 21/09/2016, at 5:07 am, Tim <[hidden email]> wrote:

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Post images on http://www.imgur.com and include the link in your posting.
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Hello, we recently purchased a shearing interferometer from Thorlabs (Part # SI254) to test collimation after beam expansion in our two-photon microscope setup. The strange thing is we cannot seem to get an interference pattern either before or after beam expansion (varying the distance between the lenses in the beam expander). We do see the pattern clearly if we try on a simple laser diode. Does anyone have experience looking at the shearing interferometer pattern with a Ti-Sapphire laser or have any ideas what may be causing our problem?

Thanks for any help,
Tim

Mark  B. Cannell Ph.D. FRSNZ FISHR
Professor of Cardiac Cell Biology
School of Physiology &  Pharmacology
Faculty of Biomedical Sciences
University of Bristol
Bristol
BS8 1TD UK

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