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Spie Press Book

Enhanced Optical Filter Design
Author(s): David H. Cushing
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Book Description

This book serves as a supplement to the classic texts by Angus Macleod and Philip Baumeister, taking an intuitive approach to the enhancement of optical coating (or filter) performance. Drawing from 40 years of experience in thin film design, Cushing introduces the basics of thin films, the commonly used materials and their deposition, the major coatings and their applications, and improvement methods for each.


Book Details

Date Published: 15 December 2011
Pages: 168
ISBN: 9780819483584
Volume: PM201

Table of Contents
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Preface
1 Basics
1.1 Introduction
1.2 Mathematical Models
1.3 Lower-Index Films
1.4 High-Index Coatings
1.5 Adding Layers
1.6 High-Reflection Coatings
1.7 Comments
2 Methods of Deposition and Materials Used
2.1 Vapor Deposition
    2.1.1 Thermal deposit
    2.1.2 Electron beam
    2.1.3 Ion-aided deposition
    2.1.4 Oerlikon Leybold advanced plasma source
    2.1.5 Sputtered films
    2.1.6 Ion-beam sputtering
2.2 Stable Films for Wavelength-Divison-Multiplexer-Type Applications
    2.2.1 Thermal deposit
    2.2.2 Electron beam
    2.2.3 Sputtered films
    2.2.4 Ion-beam sputtering
2.3 Materials
2.4 Dispersive Index Values
3 Antireflection Coatings
3.1 Introduction
3.2 Single-Layer Coatings
3.3 Two-Layer Coatings
3.4 Three-Layer Designs
3.5 Alternate Designs
3.6 Camera-Type Coatings
3.7 Ultraviolet AR Coatings
4 Multilayer Films
4.1 Extending a Reflection Zone
4.2 Beam Splitters
4.3 Profile Filters or Gain-Flattening Filters
4.4 Reflection Type
5 Dichroics
5.1 Introduction
5.2 Short-Pass Filters
5.3 Notch Filters
6 Metal Films and Filters
6.1 Mirrors
6.2 Overcoats
6.3 Silver Mirrors
6.4 Protected Silver
6.5 Gold Mirror
6.6 Beam Splitters
6.7 Etalon Coating
6.8 Neutral-Density Filters
6.9 Solar Coatings
6.10 Absorbers
6.11 Dual-Function Film
6.12 Reflective Color Filters
6.13 Narrower Bands
7 All Dielectric Bandpass Filters
7.1 Wide Bandpass Filters
7.2 Etalon Filters
7.3 Steps Leading to the Selected Design
7.4 Very Wide Filters
7.5 Semiclassical Filters
7.6 Alternative Approach
7.7 Other Ripple-Removal Approaches
7.8 Microwave Filters with Equivalent Layers (My Technique)
    7.8.1 Approach
    7.8.2 Design technique
7.9 Blocking of All-Dielectric Filters
7.10 Conclusion
8 Optical Monitoring
8.1 Introduction
8.2 Adding a Low-Side Blocker
8.3 Long-Pass Filters
8.4 Short-Pass Filters
8.5 Herpin Equivalents
8.6 Using TFCalc
9 Fully Blocked Visible Filters
9.1 Introduction
9.2 1M Filters
9.3 2M Filters
9.4 3M Filters
10 Fully Blocked Ultraviolet Filters
10.1 Introduction
10.2 Metal Portion Starting Design
10.3 Other Wavelengths
10.4 More Cavities
10.5 Higher-Transmission Filters
10.6 Substituting SiO2 for MgF2
11 Nonpolarizing Reflection Filters
12 Nonpolarizing Transmissive Filters
12.1 Introduction
12.2 Broadband Filters
12.3 Long-Pass Filters
12.4 Short-Pass Filters
Index

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