visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-05-26 16:00 
일시 4pm, 26th May 
장소 E6 1323 
연사 황민수 (Department of Physics, Korea University) 
* Title: Topological photonic devices
 
* Speaker: 황민수 (Department of Physics, Korea University)
 
* Date: 4pm, 26th May
 
* Place: E6 1323 (Available seats can be limited because of the COVID situation.)
 
* Abstract
Nanophotonics deals with a control of light at the nanoscale being closely connected with the rapid advances. Properly engineered nanostructures allow the subwavelength propagation of light and its strong confinement in nanowaveguides and nanocavities, making possible the field enhancement and lasing. Recent developments in the physics of photonic topological insulators (PTIs) and bound states in the continuum (BICs) allowed to advance the field of nanophotonics and introduce novel all-dielectric nanostructures and nanolasers empowered by topology and interference effects. Optical BICs have provided a useful way to suppress out-of-plane losses and enhance quality factor (Q factor) in an infinite periodic structure, as a result of destructive mode inference in the far field. The intrinsic topological nature of BICs enables strong optical responses or low-power operation to be achieved. Exploiting long-lived, spatially-confined BICs has emerged from the numerous approaches considered as a promising route to boost nanophotonic Q factors. Moreover, in photonic systems, light propagation without backscattering and defect/imperfection-immune operation has been pursued to develop an ideal light source. Such distinctive features are considered particularly important in nanophotonic devices that are sensitive to small perturbations. After a new branch of optics, called “photonic topological insulators”, appeared and grew rapidly, controlling the topological phases of photonic structures has emerged as a novel manipulation of light. Here, the operational mechanisms, optical characterizations, and practical applications of photonic crystals based on BICs and PTIs are outlined. Their scientific and engineering challenges and results are also discussed.
번호 날짜 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
356 2022-04-11 16:00  E6, #1501  Emergence of Statistical Mechanics in Quantum Systems
355 2022-04-25 16:00  E6, #1501  Ultrafast electron beam, a tool to explore the nanoscopic world of materials(우리말강의)
354 2022-04-04- 16:00  E6, #1501  New paradigms in Quantum Field Theory
353 2022-05-10 16:00  E6 1323  (광학분야 특별세미나)Testing quantum thermodynamics using quantum optics
352 2022-04-14 16:00  E6 1323  (광학분야 특별세미나)Holographic tomography of dielectric tensors at optical frequency
» 2022-05-26 16:00  E6 1323  (광학분야 특별세미나)Topological photonic devices
350 2022-04-28 16:00  E6 1323  (광학분야 특별세미나)Adiabaticity and symmetry in optical waveguide design
349 2022-03-31 16:00  online  (광학분야 특별세미나)Ultrafast time-resolved spectroscopy in topological materials
348 2016-09-21 16:00  E6-2. #2502(2nd fl.)  Entanglement probe of two-impurity Kondo physics
347 2016-04-18 15:30  KI빌딩(E4), 강의실 B501 (5F)  First Principles Approaches for Intermolecular Interactions: From Gas-Phase Dimers to Liquid Water and Molecular Crystal Polymorphism file
346 2022-05-02 16:00  E6, #1501  What can we learn from the history of science and technology?(우리말강의)
345 2022-05-23 16:00  E6, #1501  Novel electronic transport in topological van der Waals magnets
344 2022-05-30 16:00  E6, #1501  Light manipulation using 2D layered semiconductors
343 2022-05-09 16:00  E6, #1501  Searching for new electronic properties in correlated material flatland
342 2022-05-16 16:00  E6, #1501  Design synthetic topological matter with atoms and lights
341 2016-05-17 11:00  창의학습관(E11), 406호  The CERN Resonant WISP Search: Development, Results and Lesson-Learned
340 2021-05-27 16:00  온라인  찾아가는 물리연구 현장(유럽 입자물리학연구소 소개) file
339 2021-07-29 14:00  Online seminar  Gravitationally Induced Dark Sector and Inflationary Dynamics file
338 2019-08-19 10:00  Rm. 1322, E6-2  Tutorials on Multimode Quantum Optics in the Continuous Variable Regime file
337 2016-04-01 14:30  E6-2. 1st fl. #1501  Interference of single charged particles without a loop and dynamic nonlocality