College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A sodium laser emits a light beam of wavelength 589 nm in air, with a beam diameter of 3 mm
and emitted power of 50 mW. Evaluate:
i) the wavenumber k0,
ii) the angular frequency ω, and
iii) the peak amplitude of the electric field E0 in the laser spot (you may assume beam divergence
due to diffraction is negligible).
Give the appropriate SI units in each case.
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