Photodetection and Measurement: Making Effective Optical Measurements for an Acceptable Cost / Edition 1

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The "opto-electronics revolution" has made the art and science of making sensitive, accurate, and inexpensive optical measurements must-know information for legions of electronic engineers and research students. And there’s no faster or easier way to master photodetection and measurement techniques than with this hands-on tutorial written by a teacher with experience enough to know the questions you would ask.

A clear, easy-to-understand "rules-of-thumb" approach shows you how to make high-performance optical measurements by getting the fundamentals right, often with simple, inexpensive equipment commonly found in laboratories. It includes treatment of:

* Photodetectors

* Amplifiers

* LED sources

* Electronic modulation and demodulation

* Interference avoidance

* Data acquisition and basic DSP

You’ll also gain a firm understanding of noise-reduction techniques and the essentials of building-in speed, sensitivity,and stability. If you want to learn the secret of making sound optical measurements without expensive equipment, this is the one resource you shouldn’t work without.

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Editorial Reviews

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The Barnes & Noble Review
If the idea of taking optical measurements seems a bit esoteric, you better think again. Your world is changing, and your need to know how to measure certain kinds of light has become increasingly commonplace. The importance of this kind of information has grown exponentially, as the market's need for constantly increasing sophistication in technology escalates. This outstanding book is a hands-on tutorial to show you how to take optical measurements easily and inexpensively.

Author Mark Johnson begins by discussing the basics of photodetection using junction photodiodes and shows how they can be represented by a simple current-generator model. Next, Johnson progresses from photodetectors to photodetection, simple electronic circuits that allow observation and measurement of state and varying optical signals with a voltmeter, on an oscilloscope, or as part of an optoelectronic product. Then, you'll look at the fundamental sources of noise. Next, the author looks at a handful of less common, but occasionally very useful photodetection configurations. The author then goes on to cover system noise and synchronous detection. Next, Johnson presents a small collection of the "electronic clichés" or useful electronic circuits and construction techniques that you will need to get you going, together with some suggestions for actual components.

There are many approaches to controlling ambient light: some optical, some electronic; this book will look at a few of these. Many optical measurement systems suffer from a lack of optical signal energy. Here, the author looks at the main issue: a lack of stability. Next, he discusses some of the problems involved in transferring a high-performance optical instrument, well designed in consideration of photon budgets and temperature drift performance, to an industrial environment where it is up against a different set of stresses, the greatest of which is so-called fouling. Then, you'll work through an important measurement situation where noise and stability are strongly coupled. Finally, the author concludes with a discussion of additional electronic measurements.

The principles contained in this excellent book are interesting and didactic for the whole of optical measurement. Anyone in research or electrical engineering will benefit from having this book close at hand when a problem presents itself. John R. Vacca

John R. Vacca, the former computer security official (CSO) for NASA's space station program (Freedom), has written nearly 40 books about advanced storage, computer security, and aerospace technology.

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Product Details

  • ISBN-13: 9780071409445
  • Publisher: McGraw-Hill Professional Publishing
  • Publication date: 6/28/2003
  • Series: Professional Engineering Series
  • Edition description: New Edition
  • Edition number: 1
  • Pages: 298
  • Product dimensions: 7.60 (w) x 9.50 (h) x 0.98 (d)

Meet the Author

Mark Johnson, Ph.D is an independent consultant in opto-electronics and measurement innovation. He is a visiting professor at Salford University in England and St. Etienne University in France and has managed corporate research teams in the United Kingdom, the United States, and Germany. Dr. Johnson resides in Cheshire, England.

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Table of Contents

Ch. 1 Photodetection Basics 1
Ch. 2 Amplified Detection Circuitry 19
Ch. 3 Fundamental Noise Basics and Calculations 45
Ch. 4 Interlude - Alternative Circuits & Detection Techniques 79
Ch. 5 System Noise and Synchronous Detection 93
Ch. 6 Some Electronic Circuits and Construction Techniques to Get You Going 119
Ch. 7 Control of Ambient Light 141
Ch. 8 Stability - Temperature Compensation Techniques 163
Ch. 9 Contamination and Industrial Systems 191
Ch. 10 Measurand Modulation 213
Ch. 11 Multiple-Channel Detection 233
App. A Calculations Using the Complex Frequency Representation 247
App. B What Does the Spectrum Analyzer Measure? 265
App. C Bluff Your Way in Digital Signal Processing 273
App. D The Weighing Problem 285
References 289
Index 293
About the Author 299
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