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Engineering Physics by S. Mani Naidu

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14.20 Half-wave plate

Similar to quater-wave plate, a half-wave plate introduces a path difference of images or phase difference of π between o-ray and e-ray. Let ‘d ’ be the thickness of the half-wave plate.

For a half-wave plate, the path difference, images in calcite crystal half-wave plate. In the case of quatz, images. Using the above equation, the thickness of half-wave plate can be estimated.

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