How does Irradiance change with magification?

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Magnification affects irradiance by altering the distribution of light across the image plane, with a proposed relationship of 1/m^2 for irradiance variation. The transverse magnification (mT) influences the separation of diffracted orders, which in turn affects the k vector. Understanding the direction cosines, alpha and beta, is crucial for accurately describing these changes. The discussion seeks clarification on these optical principles and their implications for the test bench setup. Further insights or rewording of the original post may enhance engagement and responses.
ppoonamk
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Hi everyone,

I have an optical test bench. The aim of this test bench is to get a 2 beam interference of the diffracted orders on the image plane. The optical test bench on the whole has a magnification factor of 12.5.

1) I wanted to know how the magnification affects the irradiance. I feel the Irradiance varies by a 1/m^2 factor. Is this correct?
2) How does the k vector change with magification? I know that the separation of the orders changes according to the magnification. I have an attached an image of the equation. mT is the transverse magnification. Alpha and beta are the direction cosines. Is this correct?

Thank you
 

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Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 

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