They don't use that thin cable for such applications, but the point is that
as long as there is little loss, power density doesn't matter.

    KreAture

----- Original Message -----
From: "Larry Reynolds" <lreynol4@EROLS.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, February 04, 2003 10:07 PM
Subject: Re: [ot]: laser question


> Consider the optical power densities within a single mode fiber (~8 um)
> driven with 100 watts of optical power:
>
>         Pd = 100/(PI*(8e-6)^2) or 497.4 trillion watts/m^2
>
>         egads!!!!!!!!!!!!
>
> Larry
>
>
> Mark Perri wrote:
> >
> >  From this blurb, it looks like DARPA is trying to make a >100W fiber
and
> > eventually 100kW for "speed of light engagement."
> >
> > http://www.darpa.mil/tto/programs/hpfl.html
> >
>
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