Frank Wise received a BS in Engineering Physics from Princeton University, an MS in Electrical Engineering from the University of California at Berkeley, and a PhD in Applied Physics from CornellUniversity.Before PhD studies,he worked on advancedintegrated circuits at Bell Laboratories.  Since receiving the PhD in 1988, he has been on the faculty in Applied Physics at Cornell.From 2007 to 2011 he served as Director of the School of Applied and Engineering Physics, and from 2017 to 2024 he servedas Director of the CornellCenter for Materials Research.

       Short-pulse fiber lasers are attractive owing to the practical benefits of a waveguide medium. However, light pulses experience strong nonlinear effects in optical fiber, and these destabilize pulses of even modest energies. As a result, fiber lasers have lagged behind solid-state lasers in performance. Recent work has identified new solutions for pulse propagation in fiber that are stable despite accumulating huge (100p) nonlinear phase shifts [1], along with oscillator designs that leverage the highly-nonlinear propagation [2]. These devices have almost nothing in common with conventional short-pulse lasers. Simple fiber oscillators that generate pulses with megawatt peak powers are now possible, and prospects for future increases in performance will be discussed [3].The talk will include a tutorial introductionto nonlinear pulse propagation in optical fiber.  1.P. Sidorenko et al., Optica 6, 1328 (2019). 2.H. Haig et al., Opt. Lett. 47, 762 (2022). 3.H. Haig et al., Optica 10, 1417 (2023).