visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
장소 E4, B401 
일시 2015/07/23,1:30PM 
연사 Prof. Gilles Lérondel (Univ. of Technology of Troyes) 

Enhanced ZnO based UV photonics and related applications

2015/07/23, Thu, 1:30PM, E4 B401

Prof. Gilles Lérondel, Univ. of Technology of Troyes

 

Widedirectbandgapaswellaslargeexcitonbindingenergyandrelativelyhighrefractiveindex,areonlyafewoftheintrinsicpropertiesmakingzincoxideextremelyrelevantforUVphotonicsandrelatedapplications.DespitenumerousstudiesonZnOsincethefirstobservationatroomtemperatureofUVstimulatedemission[1]inepitaxialthinfilm,resonantlight-matterinteractionviaperiodicpatterningattheemissiondiffractionlimit(∽100nm),stillremainamajorissuewhateverthemateriali.e.thinfilmsornanowires.WewillreviewsomeofourlatestresultsobtainedtowardsthisgoalonwaveguidinghighqualityepitaxialthinfilmsgrownonsapphireeitherbyPLDorOCVD.Wewillstartwiththeobservationofrandomlasing[1]andhighgainandlowloss[2]insuchathinfilm.WewillthenshowhowhighgainandlowlosscanbeusedforanewkindofefficientopticalenergytransferbetweenZnOandultrathinluminescentfilms[3].Wewillthenfinallydiscussaboutthepatterningissueofsuchhighqualityepitaxialthinfilmusingtop-downapproach.Whileresonantpatterningisdesirableforafullcontrolofthespontaneousemissionrate,micronscalestructuringcombinedwithin-planewaveguidingcanalsoleadtoenhancedstimulatedemissioni.e.lowerthresholdandhigherinternalquantumefficiency[4].Suchwaveguidingenhancedpropertiesareespeciallyrelevantforsolidstatelightingandsensingapplications.

 

 

Contact: Prof. Yong-Hoon Cho (yonghcho@kaist.ac.kr, 2549)

번호 일시 장소 연사 제목
282 May 31 (Tue.) 4 PM  #1323(E6-2, 1st fl.)  Dr. Kimin Kim, KAIST  Understanding 3D tokamak physics towards advanced control of toroidal plasma
281 May 31 (Fri.), 11:00 AM  #1323, E6-2  Prof. Guido Burkard  Cavity QED with Spin Qubits file
280 May 30 (Thu.), 16:00 PM  #1323, E6-2  Prof. Chang-Hee Cho  Tuning the excitonic properties of semiconductors with light-matter interactions file
279 May 29 (Tue.), 04:00 PM  #1323, E6-2  Prof. Jae-Won Jang  Investigation on metal nanostructure/semiconductor junction and its applications file
278 May 27,(Fri), 11:00 AM  Online seminar  Prof. Gray Rybka(University of Washington)  Current Status and Future Plans of ADMX file
277 May 24 (Tue) 4 PM  E6-2. #1323(1st fl.)  Dr. Euyheon Hwang, SKKU Advanced Institute of Nanotechnology, Sung Kyung Kwan University  Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density
276 May 24 (Fri.), 16:00 PM  #1323, E6-2  Prof. Soonjae Moon  Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
275 May 21 (Tue.), 4:00 PM  #5318, E6-2  임준원 박사  Classification of flat bands according to the band-crossing singularity of Bloch wave functions file
274 May 2 (Thu.), 4:00 PM  #1323, E6-2  Prof. Joon Ik Jang  Anomalous optical properties of halide perovskites file
273 May 19, 2016 (Thur.) 3PM  May 19, 2016 (Thur.) 3PM,  Dr. Michael Betz, CERN  The CERN Resonant WISP Search: Development, Results and Lesson-Learned
272 May 19 (Thu) 4PM  #1323(E6-2, 1st fl.)  Dr. Heedeuk Shin, POSTECH  Nonlinear/quantum optical effect in silicon nano-photonics
271 May 16, 2016 (Mon) 4PM  #1323(E6-2, 1st Fl.)  Dr. Daniel Bowring , Fermi National Accelerator Laboratory  Tuning microwave cavities with biased nonlinear dielectrics for axion searches
270 May 13 (Fri.), 1:30 PM  E6. #1501(1st fl.)  Dr. Young-Woo Son, Dept. of Physics, KIAS  Aperiodic crystals in low dimensions
269 May 13 (Fri.) 4 PM  E6. #1501(1st fl.)  Dr. Hosub Jin, Dept. of Physics, UNIST  Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics
268 May 11 (Wed.), 4 PM  E6-2. #1323(1st fl.)  Dr. Bumjoon Kim, Max Planck Institute for Solid State Research  The quest for novel high-temperature superconductors---Prospects and progress in iridates
267 May 1 (Wed), 4:00 PM  #1323, E6-2  Dr. Sungkyun Choi  Raman and x-ray scattering study on correlated electron systems: two case examples file
266 May 20(Fri.) 11:00  E6-1 #1323  Prof. Kwanpyo Kim (Department of Physics, Yonsei University)  (응집물리 세미나) Exploration of new polymorphs in van der Waals crystals
265 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 file
264 Mar25(Thur), 04:00PM  Online Seminar (Zoom)  Prof. Atsushi Tokiyasu (Tohoku Univ.)  Search for dark matter axion with Rydberg atoms file
263 Mar. 2nd (Thu), 4:00 p.m  #1323(E6-2. 1st fl.)  Dr. Jonathan Denlinger, Lawrence Berkeley National Lab  “Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems”