get_SL.m

%{
Copyright © 2019 Alexey A. Shcherbakov. All rights reserved.

This file is part of gsmcc.

gsmcc is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

gsmcc is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with sphereml. If not, see <https://www.gnu.org/licenses/>.
%}
%%
function S = get_SL(el, kh)
    global no;
    global ky;
    
    S = zeros(2,2,no);

    kz = sqrt(el - ky.*ky);
    S(1,2,:) = exp(1i*kh*kz);
    S(2,1,:) = S(1,2,:);
end