FromTheRafters said:
Sorry, but it was the poster posting as "Me" that suggested a polyethylene
lens. I was only familiar with reflection, not refraction. I understand that
paraffin wax can be used as the material also. As for shape it would be
dependent on the masers frequency - which is why "Me" was using a
trial and error method with a phosphor (TV) screen as a microwave target.
I'm not even sure why one would need to focus a coherent wave. A
regular microwave burst would spread (and need focussing) because
of the range of frequencies generated, while a maser is the microwave
equivalent of the laser and should be narrow band with little spreading.
I looked around a little before answering, but found little of interest.
Again, sorry.
...and good luck with your maser.
That's alright man. You'd think that the web would be brimming with do
it yourself maser info too.
I'm not making it from scratch though, I'm using an oven. I'd like to
achieve a pencil thin beam... Making a maser is harder than I
initially thought... Makes a difference with it being invisible and
lethal and all...
LAser pointers do have lenses. If you take out the lens it makes just
a big pattern. Matter of fact I don't think lasers and LEDs are very
much different. Light would only have to diverge a fraction of a
degree for the apparatus to require a lens. Specially if I want to be
able to power a blender from 500 yds away. It seems that coherent
light is merely light that is in phase which would only rule out any
other wavelength light. Perhaps similar photons may still be coherent
even if traveling different directions, so a laser produces coherent,
albeit unfocused, light.
