Relationship of the Second Order Nonlinear Optical Coefficient to Bandgap in Inorganic Non-Centrosymmetric Crystals.

Abstract

Second order nonlinear optical coefficient data and band gap data collected from the literature have been classified and are organized by plotting their respective values. The two dimensional plots indicate that both large bandgap - and small X(2), and small bandgap - and large X(2) are highly correlated. A corresponding trend is also demonstrated for the figure of merit which is used to rank materials for wavelength conversion efficiency. Results of the analysis are used to estimate the second order nonlinear optical properties and conversion efficiencies of several less well known materials. Trend analysis suggests that ordered GaInP2 would be exceptional as a E-O waveguide material and that the FOM of AgGaTe2, is 3.6 times that of AgGaSe2 and that crystals of HgGa2Se4 and Te(x)Se(1-x) alloys should be of distinct interest as wavelength conversion materials for infrared applications. The maximum attainable X(2) is in the range of 3500-4000 pm/V for bound electrons. For band gaps less than one eV the increase in X(2) with decreasing bandgap slows considerably.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1995
Accession Number
ADA302554

Entities

People

  • A. G. Jackson
  • M. Ohmer
  • Steven R. Leclair

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Band Gaps
  • Compound Semiconductors
  • Conversion
  • Economic Forecasting
  • Efficiency
  • Electrons
  • Energy Bands
  • Energy Gaps
  • Figure Of Merit
  • First Principles Calculations
  • Materials
  • Mechanical Properties
  • Optical Properties
  • Physical Properties
  • Quantum Properties
  • Refractive Index
  • Solid State Physics

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  • Materials Science and Engineering.
  • Regression Analysis.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics