Optical Coatings: Material Aspects in Theory and Practice

Front Cover
Springer Science & Business, Apr 29, 2014 - Science - 378 pages
Optical coatings, i.e. multilayer stacks composed from a certain number of thin individual layers, are an essential part of any optical system necessary to tailor the properties of the optical surfaces. Hereby, the performance of any optical coating is defined by a well-balanced interplay between the properties of the individual coating materials and the geometrical parameters (such as film thickness) which define their arrangement. In all scientific books dealing with the performance of optical coatings, the main focus is on optimizing the geometrical coating parameters, particularly the number of individual layers and their thickness. At the same time, much less attention is paid to another degree of freedom in coating design, namely the possibility to tailor optical material properties to an optimum relevant for the required specification. This book, on the contrary, concentrates on the material aside of the problem. After a comprehensive review of the basics of thin film theory, traditional optical coating material properties and their relation to the efficiency of coating design methods, emphasis is placed on novel results concerning the application of material mixtures and nanostructured coatings in optical coating theory and practice, including porous layers, dielectric mixtures as well as metal island films for different applications.
 

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Contents

1 Introduction
1
Part I Basics
18
2 Basic Knowledge on Optical Constants
21
3 Plane Interfaces
55
4 Thin Films Substrates and Multilayers
81
Part II Reverse Search Procedures
114
5 Experimental Determination of Thin Film Optical Constants
117
6 Material Aspects in Coating Design
159
A4 Effect on Film Properties
326
A5 Effects of Glancing Collisions
332
Appendix B
335
B2 Huygens Principle
337
B3 HuygensFresnels Principle and Wave Propagation in a Homogeneous Medium
338
B4 HuygensFresnels Principle and Interface Reflection
340
B5 A Thin Homogeneous Film
342
Appendix C
351

Part III Basic Coating Materials for UVVIS Applications
184
Porous and Dense Films
187
8 Other UVVIS Coating Materials
209
Part IV Subwavelength and Nanostructured Coatings
244
General Remarks
245
10 Strongly Porous Materials and Surface Structures
259
11 Dielectric Mixtures
269
12 Metal Island Films
279
13 Concluding Remarks
316
Appendix A
321
A2 Headon Elastic Collisions
322
A3 Simple Modelling of Momentum Transfer in PIAD in Terms of Headon Collisions
323
C2 Calculation of Refractive Index
352
C3 Calculation of Thermal Shift
353
C4 Calculation of Mechanical Stress
356
C5 Parameter Reduction
357
C6 Refractive Index Stress and Shift as Functions of Porosity
359
C7 Correlation Between Refractive Index Stress and Shift
361
C8 Predictions from the Morse Potential in PoreFree Coatings
362
Appendix D
367
D2 Application of the Quantum Well Model to Organic Molecules
368
References
372
Subject Index
375
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