Fakultät für Physik und Astronomie

Physikalisches Kolloquium am 16.10.2023: „Nonlinear feedback driven emergence, from modelocking of lasers to collective laser matter interactions“

12.10.23 | Physikalisches Kolloquium, Veranstaltung

Am Montag, den 16. Oktober 2023, um 12:00 Uhr c.t., findet der nächste Termin unseres Physikalischen Kolloquiums statt.

Referent ist Prof. Dr. Ömer Ilday (Ruhr-Universität Bochum) zum Thema „Nonlinear feedback driven emergence, from modelocking of lasers to collective laser matter interactions“.

Nonlinearity is often seen as a source of instability but also underlies self-organization, collective behavior, and lasers. Our long-term goal is to gain a better understanding of emergence, not only to predict outcomes but to figure out how to pick the conditions that lead to a particular outcome. We explore this using laser physics and laser-matter interactions as model systems, building analogies among seemingly unrelated phenomena using toy theories, which we test experimentally, often resulting in technological advancement. In 2002, we proposed Nonlinearity Management to overcome the instabilities of modelockedlasers, which led to new laser concepts. A decade ago, we began a program to translate the lessons of modelockingto a broader class of phenomena, spanning pattern formation, optical tweezers, holography, and laser surgery.

These taught us the importance of nonlocal nonlinearities that constitute positive feedback, which motivated new explorations that range from a new form of laser modelockingto implications of nonlocal nonlinearities for complex pattern formation and the most enigmatic symmetry-breaking phenomenon in biology. This is an ongoing story that continues to be shaped; I will walk you through what we learned and will attempt to share the sense of adventure that nonlinear emergence instills in me.

Abstract des Vortrags von Prof. Ilday

Die Einführung erfolgt durch Prof. Dr. Ömer Ilday.

Die Fakultät lädt alle Interessierten herzlich ein. Die Veranstaltung findet im Hörsaal HZO 20 statt. Vor dem Kolloquium bieten wir Ihnen Kaffee und Kekse an.  

Alle Termine des Physikalischen Kolloquiums finden Sie hier.

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