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SUMMARY:POB Seminar - Enhancement of linear and nonlinear thermo-optic eff
 ects by epsilon-near-zero conditions
DTSTART:20240911T181500
DTSTAMP:20260503T121253Z
UID:0858ac3b8688113de453e7f22d53c3a0c03cc631bf97c6baa12c1f7d
CATEGORIES:Conferences - Seminars
DESCRIPTION:Jiaye Wu\nThe EPFL Photonics Chapter (EPC) is very pleased t
 o announce and cordially invite you to our monthly ‘Pizza-Optics-Beer
 ’ (POB) seminar on September 11th\, at 18:15 in room CO 120.\n\n\
 n\nThis month we will have the pleasure to host Jiaye Wu - doctoral assis
 tant in Photonic Systems Laboratory with the presentation entitled:\n\n"En
 hancement of linear and nonlinear thermo-optic effects by epsilon-near-zer
 o conditions"\n\nFor organizational purposes (if you want to eat pizza!)\
 , please confirm your participation using this Doodle.\nDon’t hesitate 
 to extend the invitation to any postdoc and colleague!\n\nHope to see you 
 there\,\nThe team of the EPFL Photonics Chapter\n\n\n\nAbstract:\nNonlinea
 r epsilon-near-zero (ENZ) nanodevices featuring vanishing permittivity and
  CMOS-compatibility are attractive solutions for large-scale-integrated sy
 stems-on-chips. Such confined systems with unavoidable heat generation imp
 ose critical challenges for semiconductor-based ENZ performances. While th
 eir optical properties are temperature-sensitive\, there is no systematic 
 analysis on such crucial dependence. Here\, we experimentally report the l
 inear and nonlinear thermo-optic ENZ effects in indium tin oxide. We chara
 cterize its temperature-dependent optical properties with ENZ frequencies 
 covering the telecommunication O-band\, C-band\, and 2-μm-band. Depending
  on the ENZ frequency\, it exhibits an unprecedented 70–93-THz-broadband
  660–955% enhancement over the conventional thermo-optic effect. The ENZ
 -induced fast-varying large group velocity dispersion up to 0.03–0.18 fs
 2nm-1 and its temperature dependence are also observed for the first time
 . Remarkably\, the thermo-optic nonlinearity demonstrates a 1113–2866% e
 nhancement\, on par with its reported ENZ-enhanced Kerr nonlinearity. Our 
 work provides references for packaged ENZ-enabled photonic integrated circ
 uit designs\, as well as a new platform for nonlinear photonic application
 s and emulations.\n\n\nYou don't know POBs?\nPOBs (Pizza-Optics-Beer) are 
 monthly seminars organized by the student association EPFL Photonics Chapt
 er.\nA PhD or a postdoc gives a 20-minutes presentation about his/her rese
 arch in photonics. Discussions continue informally around pizza and beers!
 \nThe event is free and open to anyone.\n\nIf you want to receive our news
 letter (events\, updates\, and more...)\n\n© 2024 EPFL\n\n\n\nWe thank th
 e Doctoral Program in Photonics (EPDO)\, the Society of Photo-Optical Ins
 trumentation Engineers (SPIE.)\, Optica and SwissPhotonics for their s
 upport.\n\n 
LOCATION:CO 120 https://plan.epfl.ch/?room==CO%20120
STATUS:CONFIRMED
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