Accession Number : ADA302554

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

Descriptive Note : Final rept. 1 Jan 94-1 Jan 95,

Corporate Author : TECHNICAL MANAGEMENT CONCEPTS INC BEAVERCREEK OH

Personal Author(s) : Jackson, A. G. ; Ohmer, M. ; Leclair, Steven R.

PDF Url : ADA302554

Report Date : MAY 1995

Pagination or Media Count : 31

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.

Descriptors :   *NONLINEAR OPTICS, *OPTICAL WAVEGUIDES, ELECTROOPTICS, TWO DIMENSIONAL, ENERGY GAPS, ELECTRONS, PATTERNS, QUANTUM EFFICIENCY, INDIUM PHOSPHIDES, INFRARED RADIATION, FREQUENCY CONVERSION, FIGURE OF MERIT, RANK ORDER STATISTICS, GALLIUM PHOSPHIDES.

Subject Categories : Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE