High power lasers

Interview with Michal Lipson, Eugene Professor in the Departments of Electrical Engineering and Applied Physics at Columbia University. She recounts her childhood as the daughter of a prominent physicist whose work took the family to Israel and then in Brazil, where she spent her formative years in São Paulo. Lipson explains her decision to pursue a degree in physics at Technion in Israel, where she remained to complete her graduate studies in semiconductor physics under the direction of Elisha Cohen. She describes her postdoctoral research at MIT in material science with Lionel Kimerling, and she explains the opportunities that led to her first faculty position at Cornell. Lipson describes her dual interest in pursuing basic science research and industry-relevant work. She discusses her work in photonics which led to her MacArthur fellowship and the significance of her study of slot waveguides and optical amplification in silicon. Lipson describes her subsequent work in nonlinear photonics and high-power lasers, and she explains the opportunity leading to her current position at Columbia, where she has focused on two-dimensional materials. At the end of the interview, Lipson emphasizes the fundamental importance of oscillators that have always informed her research.

The interview begins with a discussion of Giallorenzi’s youth, including his education and anecdotes about his early jobs, as well as his undergraduate and graduate work at Cornell University and his work on the scattering of laser light in Chung Tang’s laboratory there. Giallorenzi recounts his first laboratory job at GT&E Laboratories working on laser displays and arc lamps, and his move soon thereafter to the Quantum Optics Branch at the Naval Research Laboratory in Washington, D.C. He discusses his work at NRL on fiber optics applied to sensor technology, including acoustic and magnetic sensors, and to pathbreaking R&D in microwave photonics. He also discusses his move to leading the then-newly created NRL Optical Techniques Branch, the departure of staff working on nuclear fusion to Livermore, and new R&D directions within his branch that were necessitated by the termination of work on liquid crystals. He recalls his relationship with NRL Director of Research Alan Berman, his promotion to Optical Sciences Superintendent, his division’s focus on high-power lasers, including MIRACL, and his decision to terminate a branch within the division. He further discusses his relationship with the Pentagon, status as a member of the Senior Executive Service, and experiences as a high-level administrator. The interview concludes with discussions of other technologies NRL worked on, the balance between basic and applied research at the lab, awards Giallorenzi has received, and his work with advisory panels, the Naval Center for Space Technology, and the Optical Society of America (now Optica).