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94 lines
3.0 KiB
94 lines
3.0 KiB
%read CSV file
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filename = 'C:\Users\Karthik\Documents\Git Repos\ULE Cavity Characterisitics\TransmissionCurve_ULECavity.csv';
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delimiter = ',';
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startRow = 1;
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formatSpec = '%f%f';
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fileID = fopen(filename,'r');
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dataset = textscan(fileID, formatSpec, 'Delimiter', delimiter, 'EmptyValue', NaN, 'ReturnOnError', false, 'EndOfLine', '\r\n');
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fclose(fileID);
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wavelengths = dataset{1};
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transmission = dataset{2};
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f_h = Helper.getFigureByTag('CavityCharacteristics');
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set(groot,'CurrentFigure',f_h);
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a_h = get(f_h, 'CurrentAxes');
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if ~isempty(get(a_h, 'Children'))
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clf(f_h);
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end
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f_h.Name = 'Wavelength dependence';
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f_h.Units = 'pixels';
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set(0,'units','pixels');
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screensize = get(0,'ScreenSize');
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f_h.Position = [[screensize(3)/30 screensize(4)/4] 1812 429];
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clf;
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W = 600:1:850;
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T = interp1(wavelengths(51:149), transmission(51:149), W);
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subplot(1,3,1)
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plot(wavelengths,transmission,'o', 'MarkerSize', 5);
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hold on
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plot(W, T,':.');
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FSR = 1.5e+9;
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T_626 = T(W==626) * 1e-2;
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R_626 = 1 - T_626;
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T_842 = T(W==842) * 1e-2;
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R_842 = 1 - T_842;
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F_626 = pi * sqrt(R_626) / (1 - R_626);
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F_842 = pi * sqrt(R_842) / (1 - R_842);
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L_626 = FSR / F_626;
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L_842 = FSR / F_842;
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R = 1 - (T * 1e-2);
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F = pi .* sqrt(R) ./ (1 - R);
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L = FSR ./ F;
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% plot(626, T_626 * 1e2, 'o', 'MarkerSize', 15, 'LineWidth', 3)
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% line([626 626], [0 0.06],'Color',[0.9586 0.7372 0.2537],'LineStyle','--')
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% line([500 1000], [T_626 T_626] * 1e2,'Color',[0.9586 0.7372 0.2537],'LineStyle','--')
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text(630, T_626 * 1e2 - 0.002, sprintf('R @ 626 = %.5f', R_626), 'FontSize' , 10)
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% text(630, T_626 * 1e2 - 0.006, sprintf('F = %.3f', F_626), 'FontSize' , 10)
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% annotation('arrow', [0.293 0.293], [0.11 0.3]);
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% plot(842, T_842 * 1e2, 'o', 'MarkerSize', 15, 'LineWidth', 3)
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% line([842 842], [0 0.06],'Color','red','LineStyle','--')
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% line([500 1000], [T_842 T_842] * 1e2,'Color','red','LineStyle','--')
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text(825, T_842 * 1e2 + 0.006, sprintf('R @ 842 = %.5f', R_842), 'FontSize' , 10)
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% text(846, T_842 * 1e2 + 0.002, sprintf('F = %.3f', F_842), 'FontSize' , 10)
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% annotation('arrow', [0.571 0.571], [0.11 0.2]);
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hold off
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hXLabel = xlabel('Wavelength (nm)');
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hYLabel = ylabel('Mirror Transmission T(%)');
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set([hXLabel, hYLabel] , ...
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'FontSize' , 14 );
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grid on
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subplot(1,3,2)
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plot(W, F * 1e-4)
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text(626, F_626 * 1e-4 + 0.2, sprintf('F @ 626 = %1.f', F_626), 'FontSize' , 10)
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text(750, F_842 * 1e-4 - 0.5, sprintf('F @ 842 = %1.f', F_842), 'FontSize' , 10)
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hXLabel = xlabel('Wavelength (nm)');
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hYLabel = ylabel('Finesse (x 10^{4})');
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set([hXLabel, hYLabel] , ...
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'FontSize' , 14 );
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grid on
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subplot(1,3,3)
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plot(W, L * 1e-3)
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text(626, L_626 * 1e-3 - 5, sprintf('L @ 626 = %1.f kHz', L_626* 1e-3), 'FontSize' , 10)
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text(750, L_842 * 1e-3 + 12, sprintf('L @ 842 = %1.f kHz', L_842* 1e-3), 'FontSize' , 10)
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hXLabel = xlabel('Wavelength (nm)');
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hYLabel = ylabel('Linewidth (kHz)');
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set([hXLabel, hYLabel] , ...
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'FontSize' , 14 );
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grid on
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hTitle = sgtitle('SLS ULE Cavity Characterisitics');
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set( hTitle , ...
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'FontSize' , 18 );
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