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SUMMARY:Noise in Optical Measurements Workshop
DESCRIPTION:Workshop Leader: Prof. Emanuel Istrate\, Victoria College\, University of Toronto \nTime/Location\nWed\, May 6: 1:00-3:00pm\, GB244 (Theory)\nThu\, May 7: \, 1:00-3:00pm\, EM005 (Practical)\nTitle: Noise in Optical Measurements \nAbstract: This workshop will explore the physical processes underlying noise in measurements\, with a focus on optical measurements and the electronic circuits used to collect signals. An example calculation will illustrate how the magnitude of noise can be estimated and will be used to describe ways in which noise can be reduced. Finally\, a brief introduction will be provided to the use of lock-in amplifiers to extract signals from noise. The practical session (on the second day) will give a brief introduction to free-space optical alignment techniques and demonstration of using lock-in amplifiers to collect very weak signals. \nBio: Emanuel Istrate received his Ph.D. in Photonics from the University of Toronto in 2005. As the Academic Program Coordinator of the Institute for Optical Sciences at U of T\, he set up a number of courses and training programs in optics at all levels of the University. His current teaching at Victoria College includes courses on scientific creativity\, science communication\, and other social interactions of scientists. He also teaches a course covering the art and science of holography\, and a course on film photography and analogy image manipulation in the darkroom. He has made contributions to lensless microscopy methods\, entrepreneurship training programs and to collaborative projects with industry. \nRegister here! \nDue to limited spots\, registering does not guarantee attendance. First come\, first served. Early year graduate students will be prioritized. Further information will be provided to those selected to attend. \nRegistration closes 11:59pm EST\, Sunday\, May 3\, 2026.
URL:https://photonics.utoronto.ca/event/noise-in-optical-experiments-workshop-2026/
LOCATION:GB244
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DTSTART;TZID=America/Toronto:20260617T160000
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SUMMARY:Exploiting Extreme Nonlinear Waves in Femtosecond Fiber Lasers
DESCRIPTION:Title: Exploiting Extreme Nonlinear Waves in Femtosecond Fiber Lasers \nLocation: GB220 \nTime: 4-5 pm\, June 17th\, 2026 \nAbstract: 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 (100) nonlinear phase shifts\, along with oscillator designs that leverage the highly-nonlinear propagation. 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.\nThe talk will include a tutorial introduction to nonlinear pulse propagation in optical fiber. \nBio: 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 Cornell University. Before PhD studies\, he worked on advanced integrated 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 served as Director of the Cornell Center for Materials Research.
URL:https://photonics.utoronto.ca/event/exploiting-extreme-nonlinear-waves-in-femtosecond-fiber-lasers/
CATEGORIES:Seminar Series
ATTACH;FMTTYPE=image/png:https://photonics.utoronto.ca/wp-content/uploads/2026/04/Frank-Wise.png
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