Front Cover; Progress in Optics, Volume V; Copyright Page; CONTENTS; PREFACE; CHAPTER I. OPTICAL PUMPING; 1. INTRODUCTION; 2. PRINCIPLES OF OPTICAL PUMPING; 3. RESULTS OBTAINED BY OPTICAL PUMPING; 4. PRACTICAL APPLICATIONS OF OPTICAL PUMPING; 5. EXTENSIONS OF OPTICAL-PUMPING TECHNIQUES; REFERENCES; CHAPTER II. NON-LINEAR OPTICS; 1. INTRODUCTION; 2. MAXWELL'S EQUATIONS; 3. NON-LINEAR SOURCE TERMS; 4. METHODS FOR SOLVING THE WAVE EQUATION; 5. EXPERIMENTS; 6. CONCLUSION; ACKNOWLEDGMENT; REFERENCES; CHAPTER III. TWO-BEAM INTERFEROMENTRY; 1. INTRODUCTION; 2. COHERENCE THEORY

3. MEASUREMENTS OF AVERAGE PHASE4. MEASUREMENTS OF PHASE VARIATIONS; 5. INTERFERENCE SPECTROSCOPY; 6. STUDIES OF SPATIAL DISTRIBUTIONS; ACKNOWLEDGMENTS; REFERENCES; CHAPTER IV. INSTRUMENTS FOR THE MEASURING OF OPTICAL TRANSFER FUNCTIONS; 1. INTRODUCTION; 2. SCANNING METHOD WITH OPTICAL FOURIER ANALYSIS; 3. SCANNING METHOD WITH OPTO-ELECTRIC FOURIER ANALYSIS; 4. SCANNING METHOD WITH ELECTRIC FOURIER ANALYSIS; 5. AUTO-CORRELATION METHOD; 6. CROSS-CORRELATION METHOD; 7. MEASUREMENT OF OTF AT A CERTAIN SPATIAL FREQUENCY; 8. CONCLUSION; ACKNOWLEDGMENT; REFERENCES

CHAPTER V. LIGHT REFLECTION FROM FILMS OF CONTINUOUSLY VARYING REFRACTIVE INDEX1. INTRODUCTION; 2. BASIC THEORY OF ELECTROMAGNETIC WAVES IN STRATIFIED MEDIA; 3. APPROXIMATE METHODS; 4. SOME GENERAL THEOREMS CONCERNING STRATIFIED MEDIA; 5. INFLUENCE OF SMALL INHOMOGENEITIES ON OPTICAL MEASUREMENTS; 6. STRONGLY INHOMOGENEOUS SINGLE LAYERS; 7. CONCLUDING REMARKS; REFERENCES; CHAPTER VI. X-RAY CRYSTAL-STRUCTURE DETERMINATION AS A BRANCH OF PHYSICAL OPTICS; 1. GENERAL PRINCIPLES; 2. OPTICAL ANALOGUE METHODS; 3. THEORETICAL TREATMENT OF SCATTERING

4. THE RELATION BETWEEN THE GEOMETRIES OF THE DIFFRACTION OF LIGHT AND OF X-RAYS5. OPTICAL EQUIVALENCE; 6. APPARATUS; 7. PROCEDURE IN USING OPTICAL METHODS; 8. RELATIONSHIP WITH OTHER METHODS; 9. INTERPRETATION OF WEIGHTED RECIPROCAL LATTICES; 10. IMAGE RECOMBINATION; 11. RECENT DEVELOPMENTS AND FUTURE POSSIBILITIES; 12. OTHER USES OF THE DIFFRACTOMETER; 13. CONCLUSIONS; ACKNOWLEDGMENTS; APPENDIX: RELATIONSHIP TO BRAGG'S LAW; REFERENCES; CHAPTER VII. THE WAVE OF A MOVING CLASSICAL ELECTRON; 1. THE OSCILLATORY FIELD OF AN ELECTRON IN ITS REST SYSTEM

2. THE WAVE OF AN ELECTRON WHlCH IS MOVING AT A CONSTANT VELOCITY3. THE 'SURFACES OF EQUAL AMPLITUDE' AND THE 'RADIATION-DENSITY'; 4. THE WAVE EQUATION OF THE MOVING ELECTRON; 5. THE WAVE EQUATION FOR THE INTERIOR OF A MAVING ELECTRON; 6. THE INHOMOGENEOUS WAVE OF THE ELECTRON REGARDED AS A SUPERPOSITION OF A DOUBLY INFINITE FAMILY OF (INHOMOGENEOUS) PLANE WAVES (WITH PLANE 'SURFACES OF EQUAL AMPLITUDE') PLANE WAVES (WITH PLANE 'SURFACES OF EQUAL AMPLITUDE') AND AS A SUPERPOSITION OF A SINGLY INFINITE FAMILY OF HEAD-WAVES