Ultraviolet Laser Beam Shaping With Constraints

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Strelkov
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Homework Statement


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Homework Equations


Lens equation
1/f = 1/d_o + 1/d_i

Minimum Gaussian beam spot
2*w_0 = ((4 * lamda * F)/(pi * D))

Where:
w_0 = beam waist (half beam diameter)
lambda = wavelength
F = focal length of lens
D = diameter of incoming spot

Don't forget to match units.

Let me know if you would like any clarifying questions. I wrote this problem out on paper and didn't want to type so I embedded images instead. I hope this isn't a problem.

P.S. distance between mirrors is 4 inches.

Thank you for any help
 
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The images are too small to be read easily. Handwriting (particularly someone else's, is all but indecipherable at this resolution. Members using mobile devices won't have a hope of reading it, never mind referencing or quoting portions of it. Please type out your question and and attempt at solution and use images as supporting material.