• 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.

      Carrier-induced refractive index change in InN

      Thumbnail
      View / Download
      382.3 Kb
      Author
      Bulutay, Ceyhun
      Zakhleniuk, N. A.
      Date
      2008
      Source Title
      Physica Status Solidi (C) Current Topics in Solid State Physics
      Print ISSN
      1862-6351
      Publisher
      Wiley
      Volume
      5
      Issue
      2
      Pages
      511 - 513
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      150
      views
      97
      downloads
      Abstract
      Rapid development of InN technology demands comprehensive assessment of the electronic and optoelectronic potential of this material. In this theoretical work the effect of free electrons on the optical properties of the wurtzite phase of InN is investigated. The blue shift of the optical absorption edge by the free-carrier band filling is known as the Burstein-Moss effect for which InN offers to be a very suitable candidate as has been recently demonstrated experimentally. Due to well known Kramers-Kronig relations, a change in absorption is accompanied by a change in the index of refraction. Considering n-type InN samples with free electron concentrations ranging from 5x10 17 to 5x1020 cm-3, and employing a nonlocal empirical pseudopotential band structure, it is shown that this leads to a few percent change of the index of refraction. These carrier-induced refractive index changes can be utilized in optical switches, futhermore it needs to be taken into account in the design of InN-based optical devices such as lasers and optical modulators.
      Keywords
      Band fillings
      Blue shift
      Comprehensive assessment
      Empirical pseudo-potential
      Free electron
      Free electron concentration
      Index of refraction
      Induced refractive index
      Optical absorption edge
      Optical modulators
      Rapid development
      Wurtzite phase
      Light modulators
      Light refraction
      Optical instruments
      Refractive index
      Refractometers
      Semiconductor quantum wells
      Zinc sulfide
      Optical switches
      Burstein-Moss effect
      Kramers-Kronig relations
      Permalink
      http://hdl.handle.net/11693/26779
      Published Version (Please cite this version)
      http://dx.doi.org/10.1002/pssc.200777471
      Collections
      • Department of Physics 2299
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
      Show full item record

      Related items

      Showing items related by title, author, creator and subject.

      • Thumbnail

        The magical world of metamaterials 

        Özbay, Ekmel (IEEE, 2009-10)
        In recent years, there has been a burgeoning interest in rapidly growing field of metamaterials due to their unprecedented properties unattainable from ordinary materials. Veselago pointed out that a material exhibiting ...
      • Thumbnail

        Experimental study of subwavelength focusing by lefthanded metamaterials with a negative refractive index 

        Özbay, Ekmel; Aydin, K. (2007)
        Two dimensional (2D) left-handed metamaterials (LHM) exhibiting negative refraction and subwavelength imaging are studied experimentally. A left-handed transmission band is observed at the frequencies where both dielectric ...
      • Thumbnail

        Negative refraction and subwavelength focusing using left-handed composite metamaterials 

        Özbay, Ekmel; Aydın, Koray (SPIE, 2008-01)
        We review experimental studies performed on left-handed metamaterials (LHM) at microwave frequencies. The metamaterial structure is composed of periodic arrays of split-ring resonators and wire meshes and exhibits a ...

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartments

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics 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 | Privacy