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I'd recommend using a Glan-Taylor over a Glan-Thompson.  The 'Thompson has
cement between the wedges.  I've found through hard experience that the
cement can sometimes degrade over time and laser exposure, eventually
wrecking the cube.  The 'Taylor has the prisms air spaced, with
no intervening cement, so they are more durable.  Finally, there is a third
type called a Glan-Laser, which is a Glan-Taylor made out of the highest
grade optical materials.  They're expensive, but they have almost no
defects so they are the least perturbing to any beam passing through them.
 Normally they are only necessary for high power/energy applications, so
most Ti:Saph users can get away with just the plain Glan-Taylor.

Craig



On Wed, Jun 6, 2012 at 4:23 PM, Johannes Helm <[log in to unmask]>wrote:

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> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> *****
>
> Sorry, I did it wrong, again.
> It's not a "Glan Thomson" prism but a Glan Thompson prism (including a
> "p", which I frequently forget).
>
> Best,
> Johannes
>
>
> > *****
> > To join, leave or search the confocal microscopy listserv, go to:
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> >
> > Am I correct in assuming that there is no simple practical way to share a
> > single multiphoton laser with two confocal systems (e.g., one system on
> an
> > inverted frame for routine work and the other on an upright frame
> > dedicated for electrophysiology work)? If someone has actually
> > accomplished this, especially in a multi-user environment, I would
> > appreciate hearing about it. Thanks, Tom
> >
>
>
> --
> P. Johannes Helm
>
> Voice:  (+47) 228 51159 (office)
> Fax:    (+47) 228 51499 (office)
>