1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
import math
import unittest
import meep as mp
class TestLDOS(unittest.TestCase):
def setUp(self):
resolution = 20
cell = mp.Vector3(10, 10, 0)
pml_layers = mp.PML(1.0)
self.fcen = 1.0
df = 1.0
sources = mp.Source(src=mp.GaussianSource(self.fcen, fwidth=df), center=mp.Vector3(),
component=mp.Ez)
symmetries = [mp.Mirror(mp.X), mp.Mirror(mp.Y)]
self.sim = mp.Simulation(resolution=resolution,
cell_size=cell,
boundary_layers=[pml_layers],
sources=[sources],
symmetries=symmetries)
def test_ldos(self):
self.sim.run(
mp.dft_ldos(self.fcen, 0, 1),
until_after_sources=mp.stop_when_fields_decayed(50, mp.Ez, mp.Vector3(), 1e-6)
)
self.assertAlmostEqual(self.sim.ldos_data[0], 1.011459560620368)
def test_ldos_user_object(self):
ldos = mp.Ldos(self.fcen, 0, 1)
self.sim.run(
mp.dft_ldos(ldos=ldos),
until_after_sources=mp.stop_when_fields_decayed(50, mp.Ez, mp.Vector3(), 1e-6)
)
self.assertAlmostEqual(self.sim.ldos_data[0], 1.011459560620368)
freqs = ldos.freqs()
self.assertEqual(ldos.freq_min, freqs[0] * 2 * math.pi)
self.assertEqual(ldos.nfreq, 1)
self.assertEqual(ldos.dfreq, 0)
def test_invalid_dft_ldos(self):
with self.assertRaises(ValueError):
self.sim.run(mp.dft_ldos(mp.Ldos(self.fcen, 0, 1)), until=200)
if __name__ == '__main__':
unittest.main()
|
