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Determining Appropriate Focal Length
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[QUOTE="MxwllsPersuasns, post: 5750140, member: 538085"] Yes we have laser light coming out of a laser diode (what I interpret to be the "image" -- please correct me if I am wrong) which then passes through and gets refracted by a lens and which then travels through a crystal and through a beamsplitter into photo-detectors. Now we can assume the object that the laser is hitting is far enough away such that we can neglect the term associated with it. This then means the equation 1/ƒ = 1/σ tells us the appropriate focal length will be the length from the "image" (again, where the laser is emitted, I believe) to the lens. I need to find that distance. [/QUOTE]
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Determining Appropriate Focal Length
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