Fundamentals of Light Sources and Lasers - Mark Csele.pdf

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FUNDAMENTALS OF LIGHT
SOURCES AND LASERS
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FUNDAMENTALS OF LIGHT
SOURCES AND LASERS
Mark Csele
A JOHN WILEY & SONS, INC., PUBLICATION
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Copyright # 2004 by John Wiley & Sons, Inc. All rights reserved.
Published by John Wiley & Sons, Inc., Hoboken, New Jersey.
Published simultaneously in Canada.
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Library of Congress Cataloging-in-Publication Data:
Csele, Mark.
Fundamentals of light sources and lasers/Mark Csele.
p. cm.
“A Wiley-Interscience publication.”
Includes bibliographical references and index.
ISBN 0-471-47660-9 (cloth : acid-free paper)
1. Light sources. 2. Lasers. I. Title.
QC355.3.C74 2004
621.36 0 6- -dc22
2004040908
Printed in the United States of America
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To my parents
for fostering and encouraging
my interest in science
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& CONTENTS
Preface
xiii
1. Light and Blackbody Emission
1
1.1
Emission of Thermal Light
1
1.2
Electromagnetic Spectrum
2
1.3
Blackbody Radiation and the Stefan – Boltzmann Law
2
1.4
Wein’s Law
4
1.5
Cavity Radiation and Cavity Modes
6
1.6
Quantum Nature of Light
9
1.7
Electromagnetic Spectrum Revisited
10
1.8
Absorption and Emission Processes
10
1.9
Boltzmann Distribution and Thermal Equilibrium
13
1.10 Quantum View of Blackbody Radiation
14
1.11 Blackbodies at Various Temperatures
15
1.12 Applications
17
1.13 Absorption and Color
18
1.14 Efficiency of Light Sources
18
Problems
19
2. Atomic Emission
21
2.1
Line Spectra
21
2.2
Spectroscope
22
2.3
Einstein and Planck: E ¼ h n
26
2.4
Photoelectric Effect
27
2.5
Atomic Models and Light Emission
28
2.6
Franck – Hertz Experiment
31
2.7
Spontaneous Emission and Level Lifetime
34
2.8
Fluorescence
35
2.9
Semiconductor Devices
37
2.10 Light-Emitting Diodes
44
Problems
48
3. Quantum Mechanics
49
3.1
Limitations of the Bohr Model
50
3.2
Wave Properties of Particles (Duality)
50
vii
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