visual
visual
Development fund

Development
fund
gogle
gogle

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Enhanced ZnO based UV photonics and related applications

2015.07.23 11:14

물리학과 조회 수:3306

날짜 2015-07-23 13:30 
연사  
장소 E4, B401 

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)

목록
번호 날짜 연사 제목
공지 2025-04-29 10:00  Dr. Yeonju Go (Brookhaven National Laboratory)  Exploring the Hottest Matter in the Universe: Quark-Gluon Plasma through Hard Probes and Artificial Intelligence
공지 2025-05-01 16:00  Dr. Inwook Kim (Lawrence Livermore National Laboratory)  BSM Physics Search with Quantum Sensors
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
582 2015-07-16 16:00    KAIST Physics Distinguished Lecture
581 2015-07-16 16:00    Next-generation ultrafast laser technology for nonlinear optics and strong-field physics
» 2015-07-23 13:30    Enhanced ZnO based UV photonics and related applications file
579 2015-08-03 10:30    Axion Search
578 2015-08-04 11:00    Propagation of ultrasound through two- and three-dimensional strongly scattering media
577 2015-09-07 15:00    Advanced Optical Materials and Devices at NRL
576 2015-09-07 16:00    Physics Colloquium : 2015 Fall file
575 2015-09-14 14:00    Ultrafast X-ray Studies on Dynamics Matter in Extreme Conditions
574 2015-09-15 16:00    Physics Colloquium : 2014 Fall file
573 2015-10-14 18:00    인터스텔라 영화 속의 물리 file
572 2015-10-15 10:00    Development of Large-Bore, High Field Magnets at the NHMFL
571 2015-10-16 15:00    High Magnetic Fields to Probe the sub-eV range of Particle/Astroparticle Physics - From the OSQAR experiments at CERN up to new perspectives at LNCMI-Grenoble
570 2015-10-16 16:00    Fluctuations of entropy production in partially masked electric circuits
569 2015-10-23 10:30    How to write a good scientific paper[Open lecture series]
568 2015-10-23 15:00    Development of a Rogowski Coil as a new beam position monitor
567 2015-11-06 16:30    Topological Dirac line nodes in centrosymmetric semimetals
566 2015-11-10 16:00    Rapid heating of matter using high power lasers
565 2015-11-19 16:00    Emergent Collective Phenomena and Functions at Reduced Dimensions
564 2015-11-23 13:30    What's Beyond the Standard Model? Lessons from Run I and what might come in Run II
563 2015-11-24 16:00    Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
쓰기