Re: Resonant mirror noise

Posted by Power, Rory on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Resonant-mirror-noise-tp7588458p7588474.html

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Hi all,

Thanks for the suggestion. We have also used galvos but in this case we are running the camera at significantly higher speed (ca. 400 fps, 2.5 ms exposure) and generally find that the galvos do not like to go above a few 100 Hz (depending on mirror size) for an appreciable scan range. More usually we are using resonant mirrors at ca. 1 kHz, which is sufficient for 100 fps.

Regards

Rory

…………………………………………………………

Dr. Rory Power
HFSP Postdoctoral Fellow
Morgridge Institute for Research
Medical Engineering | Huisken Lab
330 N Orchard St, Madison, WI, 53715
Tel: [phone]
[hidden email]<mailto:[hidden email]>




On Jul 26, 2018, at 10:49, [hidden email]<mailto:[hidden email]> wrote:

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Hi Rory,
have you considered a regular (non-resonant) galvo for the stripe removal?


It should still be fast enough to do more than several round-trips during a
10 ms exposure, so it should be quite effective in stripe removal even
without fancy synchronization between the galvo and the camera (depending on
the mirror size and the deflection angle you need in your setup...).

Best, zdenek

--


Zdenek Svindrych, Ph.D.
Research Associate - Imaging Specialist
Department of Biochemistry and Cell Biology
Geisel School of Medicine at Dartmouth
email: [hidden email]<mailto:[hidden email]>

---------- Původní e-mail ----------
Od: Power, Rory <[hidden email]<mailto:[hidden email]>>
Komu: [hidden email]<mailto:[hidden email]>
Datum: 25. 7. 2018 21:21:57
Předmět: Resonant mirror noise
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Hi Confocalists,

We’re trying to circumvent the annoyance of resonant mirrors screaming at 8
kHz. I was wondering whether anyone has a recommendation for constructing
soundproof containment?

Generally were using inexpensive resonant mirrors from EOPC: http://www.
eopc.com/sc30.html<http://eopc.com/sc30.html>

Also, does anyone know whether the more costly resonant scanners used for
confocal/multi-photon laser scanning microscopies are any better in this
regard? Were not hugely concerned with other attributes (simply for light
sheet microscopy stripe suppression) just the piercing noise.

Many thanks in advance!

Rory

…………………………………………………………

Dr. Rory Power
Morgridge Institute for Research
Medical Engineering | Huisken Lab
330 N Orchard St, Madison, WI, 53715
Tel: [phone]
[hidden email]<mailto:[hidden email]><mailto:[hidden email]>




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