If the AOM was inside the box, the beam dump would be also! That's a good thing!
James.
THIS USER WAS CLUEBYFOURED
If the AOM was inside the box, the beam dump would be also! That's a good thing!
James.
*This space intentionally left blank*
This is a great idea!Originally Posted by tocket
Member
Maybe a jeffree cell from the marvoulous Scophony mechanical TV system - I'm sure I've seen a do-it-yourself version on the net somewhere.
like here:
http://www.bluehaze.com.au/modlight/UltrasoundMod.htm
Last edited by fuzcub; 11-08-2008 at 17:07. Reason: found link
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WOW! That's neat! I am always amazed at what people were doing with electricity so long ago!
James.
Member
Those cute ultrasonic fog generators operate at about 10mhz.....
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Now that is interesting!
Does anyone know if there is a way to rotate the polarization of a beam?
I mean other than turning the laser!
Can it be done in an optic with a control signal?
James.
Member
sorry - the ultrasonic fog transducer operates at 1.7-2.5mhz - might still work for the jeffree cell though.
To flip the polarisation - a halfwave plate if it's matched to the wavelength of the laser, or a pair of mirrors arranged like a centered scanner pair will also flip the polarisation ( and change the direction by 90 deg & change the height off the deck)
Fireing a laser through an LCD with the polariser removed might give electronic control of polarisation, but not sure what the optical damage threshold of domestic LCD's would be.
B.
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I mean change it on a smooth contiuum, like from 0 to 180 degrees....
Wouldn't that be neat!
James.
Member
2 LCD's - 1st for 0-90 deg, 2nd for 90-180 ? LCD's can be driven into half-states but I think it's very temperature sensitive.
Or maybe a motorised dove prism?
B.
Creaky Old Award Winning Bastard Technologist
EO cells rotate the polarization , I have a few of them, too.
I bought them for polarization flipping 3D with the Z output from oldr quadmods.
Yes, if you have a polarization preserving surface you can do 3 D laser with the glasses.
Every other scan is a different polarization
http://www.linos.com/pages/home/shop...rlaeuterungen/
Steve
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