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SUMMARY:IEM Distinguished Lecturers Seminar: Self-emergence of laser cavit
 y solitons in microcombs: the role of slow nonlinearity
DTSTART:20231117T131500
DTEND:20231117T140000
DTSTAMP:20260916T114018Z
UID:7d115f4e2f87516a5c9bce66f847f0f0a50dcce4b4f1581dacd9d7d6
CATEGORIES:Conferences - Seminars
DESCRIPTION:Alessia Pasquazi\,\nEmergent Photonics Research Centre\, Dept.
  of Physics\, Loughborough University\, Loughborough\, UK\nThe seminar wil
 l take place in ELA 2 and will be simultaneously broadcasted in Neuchâte
 l Campus (MC A1 272).\n\nCoffee and cookies will be served at 13:00 befor
 e the seminar\, in front of the two auditoriums. \n\nAbstract\nOptical fr
 equency combs in microresonators\, often termed 'microcombs'\, are optical
  sources made up of a series of equally spaced frequency lines. These line
 s are typically produced in nonlinear microcavities due to Kerr nonlineari
 ty. The discovery of dissipative temporal cavity solitons marked a signifi
 cant breakthrough in the field. This allowed for the generation of a broad
 \, smooth spectrum especially suited for metrological comb applications.\n
 \nWe demonstrated the ability to generate localized pulses when a micro-ca
 vity is integrated within a fibre laser loop [1]. This led to our observat
 ion of laser cavity-solitons. By combining the attributes of micro-resonat
 ors and multi-mode systems\, our scheme introduces an approach for the cre
 ation\, stabilization\, and control of solitary optical pulses in micro-ca
 vities.\n\nWithin this context\, it is crucial to highlight the primary ph
 ysical characteristics of these wave types. This includes their energy eff
 iciency and dynamic properties\, both of which are essential for initiatin
 g and restoring the system. Additionally\, we have recently shown that the
 se waves can emerge spontaneously and recover with resilience [2]\, also w
 hen interacting with other states in the system [3].\n\nIn this seminar\, 
 I will present the core mechanism that turns laser cavity solitons into th
 e dominant attractors of a microcomb system. This system is designed aroun
 d a Kerr microresonator situated within an amplifying cavity. Specifically
 \, I will discuss the impact of the system slow nonlinearities and how the
 y facilitate the stable emergence of solitary waves. Furthermore\, I will 
 outline the mathematical modelling employed to depict our experimental fin
 dings.\n\nReferences\n[1] H. Bao\, et al. Laser Cavity-Soliton Microcombs.
  Nat. Photonics 13\, 384 (2019). \n[2] M. Rowley\, et al. Self-emergence
  of robust solitons in a microcavity. Nature 608\, 303–309 (2022).\n[3
 ] A. Cutrona\, et al. Nonlocal bonding of a soliton and a blue-detuned st
 ate in a microcomb laser. Commun Phys 6\, 259 (2023).\n\nBiography\nProf
 . Alessia Pasquazi earned her PhD in Engineering from the University of Ro
 ma Tre in 2009. She was a MELS fellow in Quebec\, Canada from 2010 to 2011
  and an EU Marie-Curie Fellow between 2013 and 2015. Additionally\, she wa
 s an Ernest Rutherford Fellow from 2018 to 2022 and was recognized as an E
 RC Starting Grant Laureate for the period 2020 to 2024. Prof. Pasquazi's e
 xpertise lies in the domain of nonlinear photonics and microcombs.\n\nSpec
 ializing in nonlinear photonics and microcombs\, Prof. Pasquazi has been a
 t the forefront of advancing ultrafast integrated optics. She led research
  in ultrafast integrated optics at the EPic Lab at the University of Susse
 x from 2014 to 2022. Currently\, she is at Loughborough University where s
 he directs the Emergent Photonics Research Centre. Prof. Pasquazi actively
  contributes to the academic community\, serving as a member and chair of 
 panels for numerous conferences organized by SPIE\, OPTICA\, and IEEE soci
 eties. In particular\, she served as the program chair for the OSA 'Nonlin
 ear Photonics Conference' in 2018 and was the general chair for the same c
 onference in 2020.\n 
LOCATION:ELA 2 https://plan.epfl.ch/?room==ELA%202 https://epfl.zoom.us/j/
 66144079474
STATUS:CONFIRMED
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