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Describe briefly how a linear polarizer produces polarized light from an incident unpolarized beam. Is the transmission axis of a pair of polaroid sun- glasses usually oriented horizontally or vertically for an observer standing upright and why is this? What is a Brewster window? Calculate the inclination of a Brewster window with refractive index n = 1.5 in a laser cavity in which the gaseous medium has a refractive index n = 1.0. |
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