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Key terms: math z beam w frac modes q mathrm gaussian beam laser pi intensity waist zeta exp polynomials sqrt propagation beam parameter radius theta varepsilon solutions laser beam divergence equation paraxial rayleigh range coordinates optical rho beam waist pi w lambda angular complex beam parameter circle of radius bpp laguerre hermite spot size proportional beam width axial distance over z one can write helmholtz equation field amplitude transverse radial Search external links cited by footnotes on Wikipedia page Gaussian beam: |
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