46 lines
1.7 KiB
Python
46 lines
1.7 KiB
Python
from qpms import Particle, CTMatrix, BaseSpec, FinitePointGroup, ScatteringSystem, TMatrixInterpolator, eV, hbar, c
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from qpms.symmetries import point_group_info
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import numpy as np
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import os
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import sys
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nm = 1e-9
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sym = FinitePointGroup(point_group_info['D2h'])
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bspec = BaseSpec(lMax = 2)
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#tmfile = '/m/phys/project/qd/Marek/tmatrix-experiments/Cylinder/AaroBEC/cylinder_50nm_lMax4_cleaned.TMatrix'
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tmfile = '/home/mmn/repo/tmatrix-experiments/Cylinder/AaroBEC/cylinder_50nm_lMax4_cleaned.TMatrix'
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#outputdatadir = '/home/necadam1/wrkdir/AaroBECfinite_new'
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outputdatadir = '/tmp/u/46/necadam1/unix/project/AaroBECfinite_new'
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os.makedirs(outputdatadir, exist_ok = True)
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interp = TMatrixInterpolator(tmfile, bspec, symmetrise = sym, atol = 1e-8)
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# There is only one t-matrix in the system for each frequency. We initialize the matrix with the lowest frequency data.
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# Later, we can replace it using the tmatrix[...] = interp(freq) and s.update_tmatrices NOT YET; TODO
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omega = 1.475 * eV/hbar
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sv_threshold = 0.5
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# Now place the particles and set background index.
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px = 571*nm; py = 621*nm
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n = 1.51
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Nx = 5
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Ny = 7
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orig_x = (np.arange(Nx/2) + (0 if (Nx % 2) else .5)) * px
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orig_y = (np.arange(Ny/2) + (0 if (Ny % 2) else .5)) * py
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orig_xy = np.stack(np.meshgrid(orig_x, orig_y), axis = -1)
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tmatrix = interp(omega)
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particles = [Particle(orig_xy[i], tmatrix) for i in np.ndindex(orig_xy.shape[:-1])]
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ss = ScatteringSystem(particles, sym)
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k = n * omega / c
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for iri in range(ss.nirreps):
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mm_iri_orig = ss.modeproblem_matrix_packed(k, iri, version = None)
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mm_iri_alt = ss.modeproblem_matrix_packed(k, iri, version='R')
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mm_iri_paral = ss.modeproblem_matrix_packed(k, iri, version='pR')
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print(np.amax(abs(mm_iri_orig-mm_iri_alt)), np.amax(abs(mm_iri_orig-mm_iri_paral)))
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