• About
  • Policies
  • What is openaccess
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Physics
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Science
      • Department of Physics
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Near resonant third-order optical nonlinearities of colloidal InP/ZnS quantum dots

      Thumbnail
      View / Download
      1.0 Mb
      Author
      Wang, Y.
      Yang, X.
      He, T. C.
      Gao, Y.
      Demir, Hilmi Volkan
      Sun, X. W.
      Sun, H. D.
      Date
      2013
      Source Title
      Applied Physics Letters
      Print ISSN
      0003-6951
      Publisher
      AIP Publishing
      Volume
      102
      Issue
      2
      Pages
      021917-1 - 021917-4
      Language
      English
      Type
      Article
      Item Usage Stats
      80
      views
      63
      downloads
      Metadata
      Show full item record
      Abstract
      We have investigated the third-order optical nonlinearities of high-quality colloidal InP/ZnS core-shell quantum dots (QDs) using Z-scan technique with femtosecond pulses. The two-photon absorption cross-sections as high as 6.2 × 103 GM are observed at 800 nm (non-resonant regime) in InP/ZnS QDs with diameter of 2.8 nm, which is even larger than those of CdSe, CdS, and CdTe QDs at similar sizes. Furthermore, both of the 2.2 nm and 2.8 nm-sized InP/ZnS QDs exhibit strong saturable absorption in near resonant regime, which is attributed to large exciton Bohr radius in this material. These results strongly suggest the promising potential of InP/ZnS QDs for widespread applications, especially in two-photon excited bio-imaging and saturable absorbing.
      Keywords
      Colloids
      Excitons
      High-speed Optical Techniques
      Iii-v Semiconductors
      Ii-vi Semiconductors
      Indium Compounds
      Nonlinear Optics
      Semiconductor Quantum Dots
      Two-photon Spectra
      Ultraviolet Spectra
      Visible Spectra
      Wide Band Gap Semiconductors
      Zinc Compounds
      Permalink
      http://hdl.handle.net/11693/12032
      Published Version (Please cite this version)
      http://dx.doi.org/10.1063/1.4776702
      Collections
      • Department of Electrical and Electronics Engineering 3337
      • Department of Physics 2149
      • Nanotechnology Research Center 867

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      Login

      Statistics

      View Usage Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 1771
      Copyright © Bilkent University | Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin