Posted by
Guy Cox-2 on
URL: http://confocal-microscopy-list.275.s1.nabble.com/recommended-distortion-target-for-multiphoton-tp7582387p7582402.html
Bear in mind that it may be the power supply not the tube that is faulty. We had a HeNe for years and years (certainly more than 20) on an optical bench and the only problem was a transformer in the power supply. We had that rewound locally for a modest cost.
Guy
Guy Cox, Honorary Associate Professor
School of Medical Sciences
Australian Centre for Microscopy and Microanalysis,
Madsen, F09, University of Sydney, NSW 2006
-----Original Message-----
From: Confocal Microscopy List [mailto:
[hidden email]] On Behalf Of Craig Brideau
Sent: Wednesday, 23 July 2014 6:27 AM
To:
[hidden email]
Subject: Re: 633 nm laser replacement
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I have had to get a Spectra Physics argon re-tubed for one of our confocals. It worked well and the re-tubing charge was about half the cost of a new argon laser. ($5k retubing fee vs. $9.5k for a new argon).
I suspect HeNe lasers will be a similar cost, although you can get red diode lasers at 635nm for fairly cheap at this point. Some even come in a tube package that is basically a drop-in replacement for the HeNe. I'd suggest price checking the cost of a decent 635 diode laser vs retubing your HeNe, especially since 5mW is relatively low power and diodes are cheap at these ranges.
Here's an example of a 4mW one in the tube format, although I always suggest you shop around, but at least it gives you a ballpark value for price to compare against repair of the HeNe.
http://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=1219Craig Brideau
On Tue, Jul 22, 2014 at 11:13 AM, Arvydas Matiukas <
[hidden email]>
wrote:
> *****
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>
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy> Post images on
http://www.imgur.com and include the link in your posting.
> *****
>
> Dear listers,
>
> 633nm 5mW HeNe laser LGK 7628-1 went dead on our LSM 510. The laser
> has been working for 10years and most likely >5000 hrs and suddenly
> stopped producing a beam.
>
> The confocal is off service contract so I am looking for inexpensive
> option to self-repair/replace/refurbish the laser. Core Directors and
> Managers please share any related experience. Contacting me off list
> is fine.
>
> I googled a used/refurbished laser of the same model for $650 (4
> month warranty included). Any experience with such option is greatly
> appreciated. I project about
> 1000 hrs laser usage in 2-3 years, and paying the full price for a new
> laser would not be cost effective.
>
> best,
> Arvydas
>
> Director of Microscopy Core
> SUNY Upstate Medical University
>