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SUMMARY:Promotionsvortrag Physik: Kerr-Nonlinearities and Symmetry Bre
 aking in Microresonators
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 00000010000000162F2A31C90BD443BF85C506E05FD0F2
DESCRIPTION:Ankündigung des Promotionsvortrags von: Herrn Alekhya Gho
 sh Optical microresonators have positioned themselves as a cornerstone
  technology for exploring and exploiting nonlinear optics at ultralow 
 threshold powers. The Kerr effect governs the dependence of a medium&#
 8217\;s refractive index on optical intensity. This thesis focuses on 
 two distinct nonlinear optical phenomena in Kerr microresonators. The 
 first is spontaneous symmetry breaking (SSB) of light fields\, wherein
 \, beyond a critical input power\, one of two identically pumped reson
 ant modes acquires a dominant intensity and phase. SSB has promising a
 pplications in all-optical computing and precision gyroscopes. The oth
 er is the formation of broadband frequency combs\, solitons\, harmonic
  generation\, and other nonlinear interactions. These phenomena are of
  significant importance for telecommunications and spectroscopy. We pr
 esent theoretical and experimental investigations of several novel Ker
 r SSB phenomena in single and coupled optical microresonators. We then
  demonstrate two distinct all-optical switching mechanisms based on sy
 mmetry breaking. Next\, we discuss fabrication methods and the observa
 tion of various novel nonlinear interactions in integrated silicon nit
 ride resonators\, including the generation of Raman-Kerr combs\, as we
 ll as fourth-harmonic UV light generation. (Vortrag auf Englisch) Dem 
 Vortrag schließt sich eine Diskussion von 15 Minuten an. Vortrag und 
 Diskussion sind öffentlich. Diesen Verfahrensteilen folgt ein nicht 
 öffentliches Rigorosum von 45 Minuten.
DTSTART:20260720T130000Z
DTEND:20260720T143000Z
LOCATION:Leuchs-Russell-Auditorium A 1.500\, MPI\, Staudtstr. 2\, Erlangen
DTSTAMP:20260711T014535Z
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