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May 2012

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Subject:
Re: Power Meter
From:
Sylvie Le Guyader <[log in to unmask]>
Reply To:
Confocal Microscopy List <[log in to unmask]>
Date:
Fri, 25 May 2012 14:24:42 +0000
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Bonjour Louis

A few points that might be of interest:

Which meter you use depends on what you are interested in measuring: do you want to compare laser power with different objectives, check if the performance is stable from let's say one month to the next, see if you can trust your overnight data or measure usec variations for laser studies? 

If you have an upright microscope make sure you have enough space between the stage and the objective to insert the probe. They are often quite high. The one from Lumen isn't.

You also need to decide if you want to record the data or if it is enough for you to see the fluctuations on the display. The Lumen Dynamics power meter only records data when they come out of their ExCite lamp (using a separate input) so if you want to record data from lasers using the stage probe, you need to be there to press a button at every time point.

Med vänlig hälsning / Best regards
 
Sylvie
 
@@@@@@@@@@@@@@@@@@@@@@@@
Sylvie Le Guyader
Live Cell Imaging Unit
Dept of Biosciences and Nutrition
Karolinska Institutet
Novum
14183 Huddinge
Sweden
office: +46 (0) 8 5248 1107 
LCI room: +46 (0) 8 5248 1172
mobile: +46 (0) 73 733 5008


> -----Original Message-----
> From: Confocal Microscopy List
> [mailto:[log in to unmask]] On Behalf Of
> [log in to unmask]
> Sent: 24 May 2012 16:22
> To: [log in to unmask]
> Subject: Power Meter
> 
> *****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> *****
> 
> Bonjour ā tous,
> 
> I would like to have some suggestions in order to buy a power meter for checking
> the LASERs intensities at the objective level.
> 
> Thanks for your help!
> 
> Louis
> 
> Louis Villeneuve
> Research Associate - Confocal Microscopy Montreal Heart Institute- Research
> Center
> 5000 East Belanger
> Montreal (Qc), Canada
> H1T 1C8
> 
> 514-376-3330 ext 3511
> 514-376-1355 (Fax)
> 
> [log in to unmask]

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