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CLEANUP - changes to folder structure

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This commit is contained in:
Silas Oettinghaus
2026-03-25 10:57:48 +01:00
parent 0c5ad28f0a
commit 0ae846d3c3
351 changed files with 405 additions and 1294 deletions
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20
Theory/Optical/calcFWM/calcPhaseMatching.m Normal file
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function deltaBeta = calcPhaseMatching(f_i, f_j, f_k, f_0, Ds)
% Approximate phase mismatch for degenerate FWM close to the ZDW.
% Inputs are frequencies in Hz.
% f_i, f_j : pump frequencies (equal in the degenerate case)
% f_k : signal frequency
% f_0 : zero-dispersion frequency
% Ds : dispersion slope in ps / (nm^2 km)
c = physconst('LightSpeed');
pump_frequency = 0.5 .* (f_i + f_j);
lambda_zdw_m = c ./ f_0;
dispersion_slope_si = Ds .* 1e3;
deltaBeta = -(2 .* pi .* lambda_zdw_m.^4 ./ c.^2) .* ...
dispersion_slope_si .* ...
(pump_frequency - f_0) .* ...
(pump_frequency - f_k).^2;
end