Problem 5.2: Gaussian Beams and a Two Mirror Resonator (a) What are the characteristics of a Gaussian beam at the waist? (b) What is the physical meaning of the Rayleigh range zr of a Gaussian beam? (c) In the resonator shown below the spot size of the mode is larger at mirror 2. Is the waist of the beam situated closer to mirror 1 or mirror 2? Why? Mirror 1 Mirror 2

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