[DIYbio] Could we use optical heterodyning to boost UV bands into VIS?

I came across this idea called optical heterodyning, it's the same
concept as RF heterodyning (commonly used for radio) where you have
your antenna signal (SIG) being mixed with a local oscillator (LO)
resulting in two new signals being created with frequencies LO+SIG and
LO-SIG or SIG-LO (whichever is non-negative) called the intermediate
frequencies (IF). With RF the mixer is a dual-input amplifier (I'm not
sure exactly what that is, it would be cool to see a part on mousr or
digikey) but in light it's just a 50/50 beam splitter with a
photodiode on the LO (i.e. laser) to keep the brightness stable.

Doing some algebra with and playing with a wavelength to frequency
calculator, I found that the 650nm red lasers on dealextreme.com would
boost 260nm light to 433.36nm and 280nm to 491.88nm. (The additive
heterodyne signals would be in the 180nm region of the UV)

So does anyone other than me think this could work? I already have a
red laser and a 50/50 beam splitter... I guess I would need at least a
UV low-pass filter for the SIG. Anyone know where to get one of those
cheap?

http://en.wikipedia.org/wiki/Heterodyne


HETERODYNE CHARACTERIZATION OF HIGH-SPEED PHOTOMIXERS FOR THE ULTRAVIOLET
BILLY WAYNE MULLINS - PhD Dissertation - 1989

(experimental setup starts on page 86)
http://www.dtic.mil/dtic/tr/fulltext/u2/a220914.pdf



--
-Nathan

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