BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.5.7//EN CALSCALE:GREGORIAN BEGIN:VEVENT UID:sabre-vobject-38f6641e-ef4a-42c9-a6e7-dd04b7682fe3 DTSTAMP:20260417T075530Z SUMMARY:RESCHEDULED: Optica Tuesday Lunch Seminar - Rohin McIntosh DESCRIPTION:Spatiospectral Control of Waves in Complex Media\n\nWave propag ation through complex media like biological tissue\, multimode optical fib ers\, or metamaterials is dominated by multiple-scattering\, which scrambl es an incident pulse in both space and time. However\, when the medium is static\, the random scattering process is deterministic. This allows us to control the interference of multiply-scattered waves by manipulating the input field. This has enabled remarkable experimental demonstrations inclu ding focusing light through disordered media and time-reversing waves in c haotic cavities. In this talk\, I will discuss how spatiospectral wavefron t shaping\, which combines spatial and spectral input control\, enables op timal pulse delivery through random scattering. Our experiments in 2D diso rdered waveguides explicitly illustrate the time-reversal of pulse diffusi on\, revealing a general connection between the maximization of peak power in one direction\, and total power in the other. I will also demonstrate how this technique allows us to direct pulses to multiple targets within t he medium at different times\, effectively controlling the light'\;s pa th as it navigates through disorder.\n X-ALT-DESC:FMTTYPE=text/html:

Spatiospectral Control of Waves in Complex Media

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Wav e propagation through complex media like biological tissue\, multimode opt ical fibers\, or metamaterials is dominated by multiple-scattering\, which scrambles an incident pulse in both space and time. However\, when the me dium is static\, the random scattering process is deterministic. This allo ws us to control the interference of multiply-scattered waves by manipulat ing the input field. This has enabled remarkable experimental demonstratio ns including focusing light through disordered media and time-reversing wa ves in chaotic cavities. In this talk\, I will discuss how spatiospectral wavefront shaping\, which combines spatial and spectral input control\, en ables optimal pulse delivery through random scattering. Our experiments in 2D disordered waveguides explicitly illustrate the time-reversal of pulse diffusion\, revealing a general connection between the maximization of pe ak power in one direction\, and total power in the other. I will also demo nstrate how this technique allows us to direct pulses to multiple targets within the medium at different times\, effectively controlling the light&# 39\;s path as it navigates through disorder.

\n CREATED;TZID=America/New_York:20260309T114818 URL;VALUE=URI:https://engineering.yale.edu/news-and-events/events/optica-tu esday-lunch-seminar-rohin-mcintosh DTSTART;TZID=America/New_York:20260324T130000 DTEND;TZID=America/New_York:20260324T140000 SEQUENCE:0 END:VEVENT END:VCALENDAR