Book review: Foundations of Nonlinear Optical Microscopy Eric Olaf Potma | Review by Barry R. Masters Potma’s book is an extraordinary and comprehensive addition to the genre of nonlinear optical microscopy textbooks. It fills a lacuna found in other textbooks by providing a clear, logical development from the fundamentals to the advanced topics. There is a consistent framework: light propagation, signal generation in the specimen, light detection and image analysis. I appreciate the high pedagogical value of the text with a detailed mathematical description involving step-wise derivations of the equations and clear descriptions of the physical phenomena. The text is augmented with well-designed figures, many in color; and -sided Feynman diagrams (Mukamel, Shen); many worked numerical examples; bibliographies; appendices and an index. The broad treatment of the nonlinear phenomena begins with scalar treatment of the fields and progresses to vector fields (Braat and Török). Potma ex...