Angelina Jolie

Question about LASERs and spectrums.?

I know that a green laser (532mW) is usually a IR (1064mW) passed through a crystal that cuts it down half. Is it possible to put two of these crystals in series and produce a 260mW beam, and so on. What problems would you face as you go down the spectrum? Thanks
replace mW with nm
I was using this approach because true UV laser can be very expensive and you cant really buy a soft X-ray laser. It seems that you could be able to get up to soft x-rays with this system possibly full x-rays with powerful equipment.