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My understanding is that you can use a beam splitter created from two prisms that will split laser light. This is done during holography from what I understand
by jlgreco 13y ago
My understanding is that you can use a beam splitter created from two prisms that will split laser light. This is done during holography from what I understand.
I don't entirely understand all of this, my optics is very rusty.
http://en.wikipedia.org/wiki/Beam_splitter http://en.wikipedia.org/wiki/Beam_splitter
http://en.wikipedia.org/wiki/Holography#Apparatus http://en.wikipedia.org/wiki/Holography#Apparatus
http://en.wikipedia.org/wiki/Total_internal_reflection#Fractional_total_internal_reflection http://en.wikipedia.org/wiki/Total_internal_reflection#Fract...
- mpyne 13y agoWell a beam splitter as described in the Wikipedia page is moving past my own ability to describe, but the net effect from the double-prism description seems to resemble the effect of precisely curving the cable: Some light is able to internally reflect out the splitter while the rest proceeds as normal. But in this case the prism is 'just' a convenient way of getting the desired diagonal shape with materials of different refractiveness, you're not actually breaking light into its component wavelengths as you'd see in NSA's PRISM logo.