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Superposition of two laser beams

  1. Nov 1, 2008 #1

    cks

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    I want to superpose two laser beams to create the beat frequency.

    I design the system to be like this .

    Two laser beams come from A and B meet at the center of the PBS, so that two laser beams going out to C and D. I tune the laser beams A and B such that the laser output at C and D superimpose. In mathematical terms.

    E1=Aexp[i(k1x-w1t)]
    E2=Bexp{i(k2x-w2t)]

    So, the superimposed state is

    E=E1+E2.

    My problem is, I use a polarizing beam splitter. so the output laser beam have Electric field that are orthogonal to each other. It'd be nice if I can get parallel E field so that the superposition would be much better.

    How can I do that. How can I make the two orthogonal electric field to be parallel to each other?
     

    Attached Files:

  2. jcsd
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