Fred wrote: > Michael Foster asks: >> > >> Could some CF be going on in these crystals unnoticed? In >> other words, if you measure the optical energy of the laser >> wavelength going in, the unconverted laser energy, the >> energy of the doubled wavelength, and the waste heat given >> off do you arrive at over unity? >> > To answer a question with a question, wouldn't it be simpler > to do calorimetry on a small fluorescent UV lamp in a aluminum > hole "cavity" immersed in D2O? > IOW, why bother with single frequencies, when the uv lamp > output runs from micron infrared to 180 nm uv?
Well, yes, it would be simpler. I was just wondering if CF was going on in those deuterated frequency doubling crystals unobserved. I suppose I'll have to go back and read your original posts on this subject, but if your idea depends on stimulated Brillouin scattering, there would be a problem of reaching a threshhould, as SBS doesn't happen at low power densities. A high power argon- mercury arc with a quartz envelope might do the trick. Most of those low power "fluorescent" lights have an ordinary glass tube, thus suppressing all of the short UV. Have I missed your whole concept here? M. _______________________________________________ Join Excite! - http://www.excite.com The most personalized portal on the Web!
