2024 marks the 65th anniversary of a significant milestone in optics: the publication of Principles of Optics by Max Born and Emil Wolf, a comprehensive book on physical optics that has been cited some 78,000 times in the scientific literature according to Google Scholar. The book went through seven editions before the passing of both coauthors, with the seventh expanded edition released by Cambridge University Press in 1999. It is a scientific book influential enough to have its own Wikipedia page.
The first edition of Principles of Optics, released in 1959, was a completely expanded and revised edition of Max Born’s own optics book, Optik, that had only appeared in German. Born was close to retirement age, and he enlisted the aid of a bright young PhD of Czech descent, Emil Wolf, to help him with the work. Wolf at that time was very interested in the field of optical coherence, i.e. how the statistical properties of light influence its observable properties, and he pushed to include a chapter on coherence in the book. This turned out to be a very fortuitous decision, as the first laser was invented in 1960, and coherence theory was crucial for understanding the properties of this strange new source of light. This helped catapult Principles of Optics into being perhaps the book on the fundamentals of optical physics for the next 60-plus years.
To commemorate this anniversary, Optics & Photonics News released a retrospective article on the writing of the book and its revision in 1999 (subscription required, alas). The author Patricia Daukantas, reached out to me for some of my thoughts on the 1999 edition, as I was a student of Emil Wolf at that time. I also provided a few high-resolution photos of Emil and his students that I had in my possession. Only one of them was used in the final article, so I thought I would share them here and a few words about each.
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