(광학분야 특별세미나)Topological photonic devices
2022.05.20 11:07
장소 | E6 1323 |
---|---|
일시 | 4pm, 26th May |
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.
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
377 | March 18(Fri.) 11:00 | Online seminar | Dr. Dirk Wulferding (IBS-Center for Correlated Electron Systems, Seoul National University, Seoul) |
(응집물리 세미나) Illuminating exotic states of matter: Raman spectroscopy as an experimental tool to characterize quantum spin liquids
![]() |
376 | May 27,(Fri), 11:00 AM | Online seminar | Prof. Gray Rybka(University of Washington) |
Current Status and Future Plans of ADMX
![]() |
375 | May. 25th (Wed), 14:00 | E6 Room(#2501) | Dr. Duk-Hyun Choe(Samsung Advanced Institute of Technology) |
Atomic-level insights into ferroelectric switching and preferred orientation of ultrathin hafnia
![]() |
374 | May. 25(Wed), 4pm | E6-2. 1st fl. #1323 / Zoom | Dr. Sungwoo Hong (Enrico Fermi Institute at University of Chicago) | Uncovering New Lampposts for Dark Matter: Continuum or Conformal |
» | 4pm, 26th May | E6 1323 | 황민수 (Department of Physics, Korea University) | (광학분야 특별세미나)Topological photonic devices |
372 | 3pm, 19th May | online | Jonghee Yoon, PhD (Assistant professor, Department of Physics, Ajou University) | (광학분야 특별세미나)Development of a multimodal optical system for improved disease diagnosis |
371 | 5. 30(월), 16:00 | E6, #1501 | 공수현교수 (고려대학교 물리학과) | Light manipulation using 2D layered semiconductors |
370 | 5. 23(월),16:00 | E6, #1501 | 김준성교수 (postech 물리학과) | Novel electronic transport in topological van der Waals magnets |
369 | 5.16(월),16:00 | E6, #1501 | 조규붕교수 (HKUST) | Design synthetic topological matter with atoms and lights |
368 | 5. 9(월),16:00 | E6, #1501 | 김창영교수 (서울대) | Searching for new electronic properties in correlated material flatland |
367 | 5. 2(월),16:00 | E6, #1501 | 유상운교수 (한밭대) | What can we learn from the history of science and technology?(우리말강의) |
366 | 4. 25(월), 16:00 | E6, #1501 | 정영욱 책임연구원 (한국원자력연구원) | Ultrafast electron beam, a tool to explore the nanoscopic world of materials(우리말강의) |
365 | 4. 11(월),16:00 | E6, #1501 | 노재동교수 (서울시립대 물리학과) | Emergence of Statistical Mechanics in Quantum Systems |
364 | 4. 4(월), 16:00 | E6, #1501 | 김희철교수 (Postech 물리학과) | New paradigms in Quantum Field Theory |
363 | 3. 28(월), 16:00 | E6, #1501 | 이준희교수 (UNIST 에너지 및 화학공학부) | Ultimate-density atomic semiconductor via flat bands |
362 | 3. 21(월),16:00 | E6, #1501 | 이상성교수 (한국천문연구원) | Multi-wavelength Studies on Relativistic Jets from Gamma-ray Bright Active Galactic Nuclei |
361 | 3. 14(월),16:00 | E6, #1501 | 박용근교수 (KAIST 물리학과) | Quantitative phase imaging and artificial intelligence: label-free 3D imaging, classification, and inference |
360 | 3. 7(월),16:00` | E6, #1501 | 손석우교수 (서울대 지구환경과학부) | Climate Physics and Modelling(우리말강의) |
359 | 2. 28(월),16:00 | E6, #1501 | 김동규교수 (KAIST 물리학과) | Spin-based training of optical microscopes |
358 | May. 19(Thu), 4pm | E6-2. #1323 & Zoom | Dr.Jay Hyun Jo (Yale University, Department of Physics) | Chasing Long Standing Neutrino Anomalies with MicroBooNE |