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Birefringent Thin Films And Polarizing Elements
412
by Ian J Hodgkinson, Hong Wu Qi
Ian J Hodgkinson
Birefringent Thin Films And Polarizing Elements
412
by Ian J Hodgkinson, Hong Wu Qi
Ian J Hodgkinson
Hardcover
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Overview
This book describes the propagation of light in biaxial media, the properties of biaxial thin films, and applications such as birefringent filters for tuning the wavelength of dye lasers.A novel feature of the first part is the parallel treatment of Stokes, Jones, and Berreman matrix formalisms in a chapter-by-chapter development of wave equations, basis vectors, transfer matrices, reflection and transmission equations, and guided waves. Computational tools for MATLAB are included.The second part focuses on an emerging planar technology in which anisotropic microstructures are formed by oblique deposition in vacuum. Methods for characterizing dielectric and metal films are discussed. Topics such as form birefringence, effective medium theory, anisotropic scatter and anisotropic fluid transport are discussed in detail.Practical applications of bulk and layered birefringent media are considered in the final part. Separate chapters are devoted to linear polarizers, phase retarders, and birefringent filters. Traditional bulk-media polarizing elements are included and compared with thin film designs.
Product Details
ISBN-13: | 9789810229061 |
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Publisher: | World Scientific Publishing Company, Incorporated |
Publication date: | 02/12/1998 |
Pages: | 412 |
Product dimensions: | 6.36(w) x 8.54(h) x 1.03(d) |
Table of Contents
List of Tables | xv | |
List of Figures | xvii | |
Glossary | xxiii | |
1 | Introduction | 1 |
1.1 | Structural Classification of Crystals | 2 |
1.2 | Optical Classification of Crystals | 2 |
1.3 | Structure of Birefringent Films | 4 |
1.4 | Optical Classification of Birefringent Films | 5 |
1.5 | Layout of the Book | 7 |
I | Propagation in Biaxial Media | 9 |
2 | Propagation Equations | 11 |
2.1 | Maxwell's Equations | 12 |
2.2 | Propagation in Free Space. Mathematical Methods | 12 |
2.2.1 | SI units | 16 |
2.3 | Propagation in Isotropic Media | 17 |
2.4 | Propagation in Anisotropic Media | 18 |
2.5 | Energy Flow | 21 |
2.6 | Notation for Biaxial Media | 22 |
2.6.1 | Material Axes | 22 |
2.6.2 | Propagation Axes | 24 |
2.6.3 | Rotations | 24 |
2.6.4 | Computations | 26 |
2.7 | Propagation in a Common Direction in a Biaxial Medium | 26 |
2.7.1 | Maxwell's Equations | 26 |
2.7.2 | Fresnel's Equation | 27 |
2.7.3 | Eigenequations for Normalized Fields | 28 |
3 | Basis Vectors | 31 |
3.1 | Partially Coherent States | 32 |
3.1.1 | Coherence | 32 |
3.1.2 | Stokes Parameters | 33 |
3.1.3 | Stokes Vectors | 34 |
3.1.4 | Degree of Polarization | 35 |
3.1.5 | Unpolarized Light | 35 |
3.1.6 | Partially Polarized Light | 35 |
3.1.7 | Polarized Light | 36 |
3.1.8 | Basis Vectors | 36 |
3.2 | Coherent States | 38 |
3.2.1 | Jones Vectors | 38 |
3.2.2 | Elliptical Polarization | 38 |
3.2.3 | Circular Polarization | 39 |
3.2.4 | Linear Polarization | 40 |
3.2.5 | Basis Vectors | 40 |
3.2.6 | Photons | 41 |
3.2.7 | Ellipsometric Parameters | 41 |
3.3 | Propagation in Layered Biaxial Media | 43 |
3.3.1 | Fresnel's Quartic Equation | 43 |
3.3.2 | Propagation in the Deposition Plane | 44 |
3.3.3 | Uniaxial Media | 45 |
3.3.4 | Isotropic Media | 45 |
3.3.5 | Basis Travelling Wave Fields | 46 |
3.3.6 | Power | 48 |
4 | Transfer Matrices | 49 |
4.1 | Mueller Calculus | 50 |
4.1.1 | Rotated Elements | 50 |
4.1.2 | Elements in Series | 51 |
4.1.3 | Mueller Calculus Computations | 52 |
4.2 | Jones Calculus | 52 |
4.2.1 | Linear Polarizer | 54 |
4.2.2 | Retardation Plate | 54 |
4.2.3 | Quarter-Wave Plate | 54 |
4.2.4 | Rotated Elements | 55 |
4.2.5 | Elements in Series | 55 |
4.2.6 | Periodic Arrangements | 56 |
4.2.7 | Jones Calculus Computations | 56 |
4.3 | Relationship of Mueller and Jones Calculus | 56 |
4.4 | Berreman Calculus | 57 |
4.4.1 | Field Matrix F | 57 |
4.4.2 | Field Coefficients a | 58 |
4.4.3 | Total Field m | 59 |
4.4.4 | Phase Matrix A[subscript d] | 59 |
4.4.5 | Characteristic Matrix M | 60 |
4.4.6 | System Matrix A | 62 |
4.4.7 | Properties of M | 62 |
4.4.8 | Computation of Film Parameters from M | 63 |
4.5 | Abeles and Heavens Calculus | 65 |
4.5.1 | Isotropic Layer | 65 |
4.5.2 | Deposition Plane | 67 |
4.5.3 | Berreman Calculus Computations | 69 |
4.6 | Relationship of Jones and Berreman Calculus | 74 |
4.6.1 | Jones Matrix with Interference | 74 |
4.6.2 | Jones Matrix with Reflections but without Interference | 75 |
5 | Reflection and Transmission | 77 |
5.1 | General Case - All Media Biaxial | 78 |
5.1.1 | Crystal-Crystal Interface | 81 |
5.2 | Sorting Columns of F | 81 |
5.3 | Isotropic Cover and Substrate | 85 |
5.3.1 | Amplitude Reflection and Transmission Coefficients | 87 |
5.3.2 | Irradiance Reflectance Coefficients | 88 |
5.4 | All Media Isotropic | 89 |
5.4.1 | Phase Changes on Reflection and Transmission | 90 |
5.5 | Computations Using the BTF Toolbox | 90 |
5.5.1 | General Birefringent Coating | 90 |
5.5.2 | PS Coatings | 91 |
6 | Guided Waves | 93 |
6.1 | Modal Condition | 94 |
6.1.1 | General Case | 94 |
6.1.2 | Isotropic Cover and Substrate | 95 |
6.1.3 | Uncoupled Modes | 97 |
6.1.4 | Poles of R | 98 |
6.1.5 | Examples | 98 |
6.2 | Modal Cutoffs | 100 |
6.3 | Modal Contours | 100 |
6.4 | Modal Field Structure | 104 |
6.5 | Modal Polarization | 106 |
6.6 | Modal Overlap | 108 |
6.7 | Modal Order | 111 |
6.8 | Power Flow | 111 |
6.9 | Prism Couplers | 112 |
II | Characterization of Anisotropic Films | 115 |
7 | Deposition of Microstructures | 117 |
7.1 | Vacuum Deposition | 118 |
7.1.1 | Apparatus | 118 |
7.1.2 | Deposition Parameters | 119 |
7.2 | Columnar Structures and Effective Media | 119 |
7.2.1 | Uniaxial Media | 119 |
7.2.2 | Biaxial Media | 119 |
7.2.3 | Effective Anisotropic Media | 123 |
7.2.4 | Zig-Zag and Wavy Anisotropic Media | 123 |
7.2.5 | Helical Microstructures | 125 |
7.3 | Computer Modelling of Deposition | 127 |
7.3.1 | Serial Deposition of Hard Spheres | 127 |
7.3.2 | Visual Analysis of Simulations | 127 |
7.3.3 | Radial Distribution Function | 128 |
7.3.4 | Two-Dimensional Angular Distribution | 131 |
7.3.5 | Column Angle | 131 |
7.3.6 | Birefringence | 131 |
7.3.7 | Conclusions from Simulations of Deposition | 131 |
8 | Form Birefringence | 135 |
8.1 | Perpendicular Incidence Ellipsometry | 136 |
8.1.1 | Computation of Ellipsometric Parameters | 136 |
8.1.2 | Characteristic Ellipsometric Curves | 138 |
8.1.3 | Experimental Values | 144 |
8.2 | Measurement of Principal Refractive Indices | 144 |
8.2.1 | In Situ Measurements | 145 |
8.2.2 | Use of Narrowband Filters | 146 |
8.2.3 | Photometric Method | 147 |
8.2.4 | Waveguide Method | 147 |
8.3 | Modelling Form Birefringence | 149 |
8.3.1 | Bragg-Pippard Equations | 149 |
8.3.2 | Inversion of the Bragg-Pippard Equations | 151 |
9 | Effective Media | 153 |
9.1 | Herpin Indices for Isotropic Layers | 154 |
9.2 | Biaxial Layers with a Common Deposition Plane | 155 |
9.2.1 | A and B Normal Columnar | 157 |
9.2.2 | A and B Parallel, Tilted Columnar | 159 |
9.2.3 | A and B Coplanar, Tilted Columnar with [psi subscript A] = -[psi subscript B] | 162 |
9.3 | Biaxial Layers Deposited in Different Planes | 164 |
10 | Anisotropic Scatter | 167 |
10.1 | Scatter into the Air | 168 |
10.2 | Scatter From Stress-Related Cracks | 169 |
10.3 | Scatter Patterns Formed on the Film | 174 |
10.4 | Scatter into the Substrate | 175 |
10.5 | In Situ Measurement of Scatter | 175 |
10.5.1 | Dependence of Haze on [Delta] | 177 |
10.5.2 | Haze from Herring-Bone Stacks | 177 |
10.6 | Simple Theory of Scatter | 180 |
11 | Fluid Transport | 183 |
11.1 | Fluid Patches | 184 |
11.1.1 | Recording Fluid Patches | 185 |
11.1.2 | MDM Narrowband Filters | 185 |
11.2 | Scatter from Fluid Patches | 188 |
11.2.1 | Scatter Anisotropy | 188 |
11.2.2 | Theory of Scatter | 191 |
11.2.3 | General AR Coating | 194 |
11.2.4 | High Reflectance Coating | 194 |
11.2.5 | Narrowband Interference Filter | 194 |
11.3 | Influence on Birefringence | 197 |
11.3.1 | Change of Birefringence in Fluid Patches | 197 |
11.3.2 | Principal Refractive Indices | 201 |
11.3.3 | Cooling and Venting | 202 |
12 | Metal Films | 203 |
12.1 | Growth and Post-Deposition Sputter Etching | 204 |
12.2 | Direct Recording of Optical Anisotropies | 206 |
12.2.1 | Silver and Gold | 209 |
12.2.2 | Aluminium | 209 |
12.2.3 | Aging | 216 |
12.2.4 | Argon Ion Sputter Etching | 217 |
12.3 | Computer Modelling of Anisotropy in Metals | 217 |
12.3.1 | Bulk Metals | 221 |
12.3.2 | Depolarization Factors | 222 |
12.3.3 | Isotropic Resonance | 223 |
12.3.4 | Anisotropic Resonance | 225 |
12.4 | Modelling Deposition and Etching | 227 |
12.4.1 | Simulated Deposition of Gold | 228 |
12.4.2 | Simulated Deposition of Silver | 231 |
12.4.3 | Simulated Deposition of Aluminium | 231 |
12.4.4 | Simulated Deposition / Etch Paths | 231 |
12.5 | Summary | 236 |
III | Applications of Birefringent Media | 237 |
13 | Linear polarizers | 239 |
13.1 | Real Polarizers | 240 |
13.2 | Dichroic Polarizers | 241 |
13.3 | Tilted Plate and Thin Film Polarizers | 243 |
13.3.1 | Plate Polarizers | 243 |
13.3.2 | Coated-Plate Polarizers | 244 |
13.3.3 | Embedded Thin Film Polarizers | 246 |
13.3.4 | Birefringent Fabry-Perot Polarizing Filter | 247 |
13.4 | Crystalline Prism Polarizers | 251 |
13.4.1 | Glan-Foucault Prism | 252 |
13.4.2 | Wollaston Prism | 253 |
13.4.3 | Rochon Prism | 253 |
14 | Phase Retarders | 255 |
14.1 | Crystalline Wave Plates | 256 |
14.1.1 | Quartz and Magnesium Fluoride | 256 |
14.1.2 | Multiple-Order Wave Plates | 257 |
14.1.3 | Zero-Order Wave Plate | 259 |
14.1.4 | Achromatic Wave Plates | 259 |
14.1.5 | Wide-Field Elements | 264 |
14.1.6 | Variable Phase Compensators | 265 |
14.2 | Birefringent Thin Film Analogues | 267 |
14.2.1 | Thin Film Wave Plates | 267 |
14.2.2 | Thin Film Babinet Compensator | 270 |
14.2.3 | Thin Film Soleil-Babinet Compensator | 270 |
14.2.4 | Thin Film Berek Compensator | 271 |
15 | Birefringent Filters | 273 |
15.1 | Polarization State Filters | 274 |
15.1.1 | Linear Polarizer | 274 |
15.1.2 | Circular Polarizer | 274 |
15.1.3 | Rotator | 274 |
15.1.4 | Depolarizer | 275 |
15.2 | Wavelength Filters | 276 |
15.2.1 | Lyot-Ohman Filter | 276 |
15.2.2 | Solc Filters | 279 |
15.2.3 | Filters for Tuning Dye Lasers | 282 |
16 | Birefringent Coatings | 289 |
16.1 | Isotropic Coatings | 290 |
16.2 | General Birefringent Coating | 290 |
16.3 | PS Coatings | 294 |
16.4 | Design Considerations for PS Coatings | 294 |
16.4.1 | Making an Anisotropic Version | 296 |
16.4.2 | Replacing an Intermediate Index | 299 |
16.4.3 | Identical Response Profiles Separated in Wavelength | 299 |
16.4.4 | Spoiling the s-response | 299 |
16.5 | Normal and Hybrid Monitoring | 300 |
16.6 | PS Sampler | 302 |
16.6.1 | Anisotropic Antireflection Coating | 302 |
16.6.2 | Anisotropic Reflector | 304 |
16.6.3 | Anisotropic-Phase Reflector | 306 |
16.6.4 | Achromatic Antireflection Coating | 308 |
16.6.5 | Achromatic Fifty Percent Reflector | 310 |
16.6.6 | Single-Cavity Narrowband Filter | 312 |
16.6.7 | Multi-Cavity Narrowband Filter | 314 |
16.6.8 | Edge Filter | 316 |
16.6.9 | Common-Index Thin Film Polarizer | 318 |
16.6.10 | Multi-Cavity Linear Polarizer | 320 |
A | Birefringent Thin Films Toolbox | 323 |
A.1 | Quick Reference | 324 |
A.2 | Commands and Functions | 327 |
Notes and References | 365 | |
Index | 371 |
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