Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 14.1, Problem 3aT
Use trigonometry to show that the path length difference between the two scattered beams shown is equal to
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Problem 9: For a Gaussian laser beam in air with a 0.5mm waist radius and X=850nm,
a. Find the (far field) diffraction half angle and the beam waist w(z) at z=50m
b. If the laser emits 5mW, what is the peak irradiance at z=50m?
c. What near field beam waist radius is required to limit the diffracted beam diameter to 1cm
at 50m? What detector diameter is needed to encircle (detect) 50% of the power?
B) Using the properties of F.T., Calculate the F.T. of the signal
sin (3πt) sin (5πt)
t²
x(t) = 5-
Consider one of the curves as shown. Suppose the intensity of the incident light is held fixed but its frequency is increased. Does the stopping potential as shown (a) remain fixed, (b) move to the right, or (c) move to the left?
Chapter 14 Solutions
Tutorials in Introductory Physics
Ch. 14.1 - In the magnified view of the slits, an arrow is...Ch. 14.1 - For what values of the path length difference...Ch. 14.1 - Suppose that a single change were made to the...Ch. 14.1 - Prob. 2aTCh. 14.1 - Prob. 2bTCh. 14.1 - Prob. 2cTCh. 14.1 - Use trigonometry to show that the path length...Ch. 14.1 - Prob. 3bTCh. 14.2 - How does the voltmeter reading compare to the...Ch. 14.2 - Prob. 1bT
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