Why was Schawlow's approach to lasers influential?
My approach was always to build the simplest possible device that could demonstrate the fundamental principle. I believed that if you can't explain it simply, you don't understand it well enough. This meant focusing on the physical reality of the light and its interaction with matter. We didn't get bogged down in overly abstract theories; instead, we asked, 'What does the light tell us?' when we design an experiment. This emphasis on clear, visualizable physics and rigorous experimental verification, even for something as complex as a laser, made the technology accessible and accelerated its practical applications in fields far beyond my own laboratory.
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