Question: 5. Consider a Gaussian beam whose width W and radius of curvature R are known at a particular point on the beam axis (see figure

5. Consider a Gaussian beam whose width W and radius of curvature R are known at a particular point on the beam axis (see figure below). Show that the beam waist is located to the left at a distance R Z W 1 + (AR/W2) W R and that the waist radius is W Z WO = (15 pt) 1 + (nW2 / AR)
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