Richard Clark wrote:
and yet you draw a blank when asked
"What is the wavelength of Glare?"

Since, in my example, glare has been completely
eliminated, you are asking: "What is the wavelength
of nothing?" My guess is that it would be the same
as the wavelength of the sound of one hand clapping.

In my example, if we increase the thickness of the thin
film to 1/2WL, it will maximize the glare to 2% of the
incident laser power. In that case, the glare would be
the same wavelength as the single-frequency coherent
laser. In the mental example, the wavelength doesn't
matter so 632.8 nm might be a logical popular choice.
I have a collimated laser of that wavelength.
--
73, Cecil http://www.qsl.net/w5dxp

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