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A light beam (?0 = 589 nm) is incident perpendicularly to a quartz plate, which is...

A light beam (?0 = 589 nm) is incident perpendicularly to a quartz plate, which is grinded such that its optic axis lies parallel to the top surface of the plate. The indices of refraction for the ordinary and extraordinary waves in quartz are no = 1.5443 and ne = 1.5534. i. Compute the wavelengths and frequencies of the two waves. ii. What is the minimum thickness of such a plate to serve as quarter-wave plate?

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