Re: Resonant mirror noise

Posted by Johannes Helm on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Resonant-mirror-noise-tp7588458p7588469.html

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Good afternoon,

Rory: How large is the wavelength band of the laser beam you try to
sweep using the scanner?

If the wavelength band is not so large (not exceeding 50nm to 100nm),
you might get completely rid of the noise by replacing the scanner with
an acousto optic deflector, AOD. However, these AODs are chromatic,
scanning mirrors are not. So, if the band of wavelengths, which you use
during your experiments, is broad, the AOD would be a pretty poor idea,
I fear.

Best wishes,

Johannes


On 2018-07-26 03:03, Power, Rory wrote:

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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
>
> 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]>

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