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Hi Ivo,

I cannot reply to all of you questions.
But we do use a beam-expander from SilOptics in order to widen the beam of a 355 nm laser and we are happy with it (no commercial interests).

Cheers
Arne



> -----Original Message-----
> From: Confocal Microscopy List
> [mailto:[log in to unmask]] On Behalf Of Ivo Telley
> Sent: mardi 29 avril 2014 12:29
> To: [log in to unmask]
> Subject: UV scanning system - commercial products
> 
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> 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.
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> 
> Dear microscopists and optical engineers,
> 
> I am looking into the assembly of a UV (355nm) scanning system coupled into
> the back of a Nikon Ti. We will use a CryLas 355 pulsed laser (FTSS355-Q3). I
> reckon that there are several commercial products for beam expansion,
> Galvo-scanner+theta lens, etc. My question is which ones to go for.
> 
> Thus, I was wondering about your experience with the performance of some
> commercial products you have used for this purpose.
> - The scan lens (f-theta) and the Galvo-scan system and their software
> implementation (I looked at Camtech and Thorlabs).
> - Would it make sense to build a beam expander (Galilean type) for this
> particular wavelength and save some $$? If so, which optics and provider
> would you suggest for 355 nm?
> - Does anybody have experience with SillOptics beam expanders for UV
> range?
> - Moreover, is there a tube lens out there that performs decently for this
> wavelength in conjunction with Nikons Plan Apo 40x 1.25W lambdaS
> objective?
> 
> Thanks for all the recommendations on this topic!
> 
> Ivo
> 
> 
> 
> 
> 
> Ivo A. Telley, PhD
> Physics of Nuclear Division Lab
> Instituto Gulbenkian de Ciência (IGC)
> Rua da Quinta Grande, 6
> 2780-156 Oeiras, Portugal
> Phone: +351 214 464 606
> Fax: +351 214 407 970
> http://www.igc.gulbenkian.pt/research/unit/136