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The doubling is a non-linear process, and even the efficiency of the
process is input-power dependent. As a result, analog intensity modulation
may behave strangely. Digital on/off shouldn't be too much of an issue
though. The one thing I caution you is that the doubling crystal and the
laser diode are usually temperature stabilized. The temperature controller
has to be able to deal with the rapidly changing heat load as you attempt
to modulate the laser, so you will want to be sure the thermoelectric
components are up to the task!
Craig Brideau
On Fri, Oct 9, 2015 at 12:16 AM, Jens-Bernhard Bosse <
[hidden email]>
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> Post images on
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> *****
>
> Dear Listers,
>
> I have to pick your brains again:
>
> Has any of you experience with the direct modulation (analog-intensity as
> well as digital-on/off) of DPSS lasers? I would be especially interested
> how stable the output is when using direct modulation.
> Coherent claims that their Obis line can be directly modulated. I
> understand that this is pretty easy with diode lasers but how do they do it
> with the classic DPSS lines like 532 nm?
>
> Thanks!
>
> Jens
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