• DocumentCode
    1256299
  • Title

    Optimizing KTP and LiTaO3 channel waveguides for quasi-phase-matched second harmonic generation with high conversion efficiency

  • Author

    Ramanujam, Nandakumar ; Burke, James J.

  • Author_Institution
    Opt. Sci. Center, Arizona Univ., Tucson, AZ, USA
  • Volume
    33
  • Issue
    2
  • fYear
    1997
  • fDate
    2/1/1997 12:00:00 AM
  • Firstpage
    152
  • Lastpage
    163
  • Abstract
    The conversion efficiency of quasi-phase-matched second harmonic generation (QPM-SHG) in waveguides can be enhanced significantly by optimizing the linear properties of the guiding structure. We describe here a method for fast and accurate computation of the modal properties of continuous, periodically poled, ferroelectric channel waveguides and a multiparameter optimization algorithm which we have used to maximize normalized internal SHG conversion efficiency. We present the phase-matching characteristics of these designs and discuss the possibility of high SHG conversion efficiency between lowest order transverse modes at the fundamental and second harmonic wavelengths near noncritically phase-matched regimes of operation
  • Keywords
    dielectric polarisation; ferroelectric devices; lithium compounds; optical harmonic generation; optical waveguide theory; optical waveguides; optimisation; potassium compounds; KTP; KTiOPO4; LiTaO3; QPM-SHG waveguides; accurate computation; continuous periodically poled ferroelectric channel waveguides; fundamental wavelengths; guiding structure; high SHG conversion efficiency; high conversion efficiency; linear properties; lowest order transverse modes; modal properties; multiparameter optimization algorithm; normalized internal SHG conversion efficiency; optical channel waveguide optimisation; phase-matching characteristics; quasi-phase-matched second harmonic generation; second harmonic wavelengths; Electromagnetic waveguides; Ferroelectric materials; Frequency conversion; Nonlinear optical devices; Nonlinear optics; Optical frequency conversion; Optical harmonic generation; Optical waveguides; Optimization methods; Wavelength conversion;
  • fLanguage
    English
  • Journal_Title
    Quantum Electronics, IEEE Journal of
  • Publisher
    ieee
  • ISSN
    0018-9197
  • Type

    jour

  • DOI
    10.1109/3.552255
  • Filename
    552255
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1256299