Homebrew PCBs

I remember that S.A. article. From back when the amateur scientist did some 
real science.
   It was cheap, but complex. Also I believe it was only pulse mode. I 
remember one of the suggested applications was to measure cloud height by 
timing reflected pulses.

   Not sure what wavelength the OP was looking for or what kind of power, 
maybe some of the newer UV leds may fit the bill.
    Not a laser, but certainly the cheapest.

-carl

At 02:56 PM 10/10/2005, you wrote:
>--- In Homebrew_PCBs@yahoogroups.com, cristian <cristianbip@b...> wrote:
> >
> > Any idea where to find the cheapest UV laser?
> > Cristian
>
>I seem to remember plans where you could build your own
>ultraviolet Nitrogen based laser (for little cost).  I think
>the plans may have been in Scientific American from about 30
>years ago (+/- a bit).  However, that's probably not exactly
>what you were intending.
>
>Dave
>
>