A plane light wave 0.691 µm is incident normally on a diaphragm with a circular aperture 3.2 cm in diameter. At what distance from the aperture should the observation point be in order for the hole to open: 1) one Fresnel zone? 2) two Fresnel zones? Express the answer as the ratio of 1) to 2) distances Answer:

A plane light wave 0.691 µm is incident normally on a diaphragm with a circular aperture 3.2 cm in diameter. At what distance from the aperture should the observation point be in order for the hole to open: 1) one Fresnel zone? 2) two Fresnel zones? Express the answer as the ratio of 1) to 2) distances Answer:

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 58P: A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. The...

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