wrote:

When you superpose two 100w coherent laser beams, the resultant
power is indeed 400w

This is correct if the two beams are coherent and have the
same polarization. Very hard to do at optical frequencies, much
easier at lower frequencies.

As in coherent RF waves confined to a transmission line, eh?

That's nothing new.

Then why are some of the "experts" on this newsgroup
protesting it so much? Some don't seem to comprehend
the energy situation associated with superposition of
EM fields.
--
73, Cecil, http://www.qsl.net/w5dxp


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