Consider a Gaussian beam whose width Wand radius of curvature R are known at a particular...

 

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Consider a Gaussian beam whose width Wand radius of curvature R are known at a particular point on the beam axis (see figure). Show that the beam waist is located to the left at a distance R 1+ (AR/ TW²y² and that the waist radius is given by W Wo = W Wo R Consider a Gaussian beam whose width Wand radius of curvature R are known at a particular point on the beam axis (see figure). Show that the beam waist is located to the left at a distance R 1+ (AR/ TW²y² and that the waist radius is given by W Wo = W Wo R