diff options
| -rw-r--r-- | mode_match_demo.m | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/mode_match_demo.m b/mode_match_demo.m index 6d93de0..af823c1 100644 --- a/mode_match_demo.m +++ b/mode_match_demo.m @@ -1,25 +1,41 @@ %Permute all possible lens combinations out of set of lenses % keep this list short - computation time goes as factorial of lens set size -lens_set = [0.025, 0.035, 0.05, .075, 0.10, .125, 0.150, 0.20, 0.25, 0.300, 0.50, 0.75, -.05, -0.10 ]; %Given lenses of unique focal lengths +lens_set = [.05, 0.025, 0.50 ]; %Given lenses of unique focal lengths +%lens_set = [0.025, 0.035, 0.05, .075, 0.10, .125, 0.150, 0.20, 0.25, 0.300, 0.50, 0.75, -.05, -0.10 ]; % Thorlabs lenses set +%lens_set = [0.025, 0.05, .075, 0.10, .125, 0.20, 0.25, 0.300, 0.50, 0.75, 1.00 ]; % Available in the lab lens_permutations = pick(lens_set,3,'or'); %3 lens solutions %Pre-defined Constants lambda= .795e-6 ; %Wavelength of beam extra_space = 0.05; % to allow lens holder placement -Ltot= .51 - 2*extra_space ; %Length of optical system + + +Ltot=0.63+0.055+0.09 ; %Length of optical system + +%% Fiber output parameters r0= 1.0E+100 ; %Initial radius of curvature w0= 5.65e-4 ; %Initial waist +x0= 0 ; %Starting position of beam +q0 = wr2q(w0, r0, lambda); +%% this will be used to propagate beam in free space dummy_lens.abcd = abcd_lens(inf); dummy_lens.x = 10000; dummy_optic = {dummy_lens}; -q0 = gbeam_propagation ( 0, wr2q(w0, r0, lambda), (-1.54 + extra_space), dummy_optic ); -x0= 0 ; %Starting position of beam -wf= 2.6983e-4 ; %Desired final waist -rf= 1.0E+100 ; %Desired final radius -qf = gbeam_propagation ( 0, wr2q(wf, rf, lambda), (-0.4813 - extra_space), dummy_optic ); +%% Cavity parameters calculated by cavity_design_demo.m +Lcav = 0.8025; +zc = 0.5062; % with respect to front mirror +% cavity waist +wc=2.6732e-04; +rc=Inf; +% however this inside of the cavity so we need to propagate it to the front mirror +dist = Lcav - zc; +% calculate beam parameter at the front mirror +% watch out that indeed there is only free space +qf = gbeam_propagation ( dist, wr2q(wc, rc, lambda), 0, dummy_optic ); +%% some parameters for visualizer and solution search lens_width = .03; %Lens width show_lens_width = 1; %Set to 1 to enable display of lens width on solution propagation plot show_lens_position = 1; %Set to 1 to enable display of position of center of lens on solution propagation plot |