Mark Johnson, Ph.D (Chesire, UK) is an independent consultant in opto-electronics and measurement innovation. He is a Visiting Professor Salford and St. Etienne Universities. He has managed corporate research laboratories in the UK, US, and Germany.

• Chapter 1: Photodetection BasicsChapter 2: Amplified Detection CircuitryChapter 3: Fundamental Noise Basics and CalculationsChapter 4: Interlude -- Alternative Circuits and Detection TechniquesChapter 5: System Noise and Synchronous DetectionChapter 6: Some Electronic Circuits and Construction Techniques to Get You GoingChapter 7: Control of Ambient LightChapter 8: Stability -- Temperature Compensation TechniquesChapter 9: Contamination and Industrial SystemsChapter 10: Measured ModulationChapter 11: Multiple-Channel DetectionAPPENDIX A: CALCULATIONS USING THE COMPLEX FREQUENCY REPRESENTATIONAPPENDIX B: WHAT DOES THE SPECTRUM ANALYZER MEASURE?APPENDIX C: BLUFF YOUR WAY IN DIGITAL SIGNAL PROCESSINGAPPENDIX D: THE WEIGHING PROBLEMREFERENCESINDEXABOUT THE AUTHOR