Optical constants

Refractive index of Li:C12H4N4 (Lithium:tetracyanoquinodimethane, Li:TCNQ )

Querry 1985: n,k 0.21–55.6 µm

Data
tabulated nk
Range
0.21–55.56 µm
Points
609
Licence
CC0-1.0

Plot

Click the plot to set the calculator wavelength.

At one wavelength

Range 0.21–55.56 µm
Refractive index n
1.18008
Extinction coefficient k
0.41444
Permittivity ε1
1.22083
Permittivity ε2
0.978145
Absorption coefficient α
88631.8 cm⁻¹
Penetration depth δ = λ/(2πk)
225.653 nm
Abbe number Vd
—
Chromatic dispersion dn/dλ
3.3 µm⁻¹
Group index ng
-0.759
Group velocity dispersion
— fs²/mm
Dispersion parameter D
— ps/(nm·km)
Photon energy
2.11001 eV

ε = (n + ik)², α = 4πk/λ, ng = n − λ dn/dλ, GVD = λ³/(2πc²) d²n/dλ², D = −(λ/c) d²n/dλ². Group-velocity dispersion is given for formula data only.

Use it in Lightsmith

Load this data in Python, simulate in one more line

pip install lightsmith
import lightsmith as ls

# Li:C12H4N4 (Lithium:tetracyanoquinodimethane, Li:TCNQ ): Querry 1985: n,k 0.21–55.6 µm
li_c12h4n4 = ls.fetch_refractiveindex("other", "Li-C12H4N4", "Querry", ref="c5c2f188e848453def5970e347399d653df2ffc2")
print(li_c12h4n4.range_nm)  # (210, 55555.6) nm
eps = li_c12h4n4.eps([633])  # complex permittivity

Downloads the original record once (pinned to the imported snapshot) and caches it.

Lightsmith is open source (MIT): Mie, T-matrix, BEM, DDA, FDTD, RCWA, TMM, mode solvers and inverse design behind one spec, on CPU or GPU. GitHub.

Comments and conditions

Lithium:Tetracyanoquinodimethane (Li:TCNQ).

References

M. R. Querry. Optical constants, Contractor Report CRDC-CR-85034 (1985)

Cite

M. R. Querry. Optical constants, Contractor Report CRDC-CR-85034 (1985); Data from the refractiveindex.info database (M. N. Polyanskiy, Sci. Data 11, 94 (2024), doi:10.1038/s41597-023-02898-2)

Data

609 rows as published
Li:C12H4N4 (Lithium:tetracyanoquinodimethane, Li:TCNQ ), Querry 1985: n,k 0.21–55.6 µm: n and k versus wavelength
λ (µm)nk
0.211.3220.13
0.221.3350.095
0.231.3360.075
0.241.3280.06
0.251.3120.053
0.261.2980.056
0.271.290.059
0.281.280.057
0.291.260.054
0.31.2310.061
0.311.1960.079
0.321.160.118
0.331.1380.18
0.341.1470.256
0.351.1920.326
0.361.2640.367
0.371.3410.373
0.381.4070.351
0.391.4560.312
0.41.4880.261
0.411.4950.204
0.421.4780.156
0.431.450.126
0.441.4220.11
0.451.3980.102
0.461.3750.097
0.471.3530.096
0.481.3330.096
0.491.3110.096
0.51.2850.098
0.511.2550.105
0.521.2240.12
0.531.1910.143
0.541.1610.178
0.551.140.223
0.561.1310.275
0.571.1350.329
0.581.1550.381
0.591.1880.425
0.61.230.455
0.611.2760.47
0.621.3160.471
0.631.3470.464
0.641.370.456
0.651.3880.448
0.661.4040.442
0.671.4210.436
0.681.4380.426
0.691.4520.411
0.71.460.394
0.711.4620.376
0.721.460.361
0.731.4530.347
0.741.4440.337
0.751.4330.329
0.761.420.323
0.771.4050.32
0.781.3890.322
0.791.3720.328
0.831.3250.385
0.841.320.401
0.851.3170.417
0.861.3130.433
0.871.3090.451
0.881.3070.47
0.891.3070.491
0.91.3090.512
0.911.3140.533
0.921.3210.554
0.931.330.574
0.941.3410.594
0.951.3530.612
0.961.3660.629
0.971.380.645
0.981.3950.66
0.991.4110.673
1.01.4280.686
1.011.4450.697
1.021.4620.708
1.031.480.717
1.041.4980.725
1.051.5170.733
1.061.5360.739
1.071.5550.743
1.081.5730.746
1.091.5910.748
1.11.6090.75
1.111.6260.75
1.121.6430.75
1.131.6590.75
1.141.6760.748
1.151.6910.746
1.161.7060.743
1.171.7210.739
1.181.7330.735
1.191.7450.734
1.21.7590.733
1.211.7740.73
1.221.7890.724
1.231.8020.717
1.241.8130.711
1.251.8240.704
1.261.8340.698
1.271.8430.692
1.281.8530.686
1.291.8610.68
1.31.870.674
1.311.8770.668
1.321.8850.662
1.331.8920.656
1.341.8990.651
1.351.9050.645
1.361.9120.64
1.371.9180.635
1.381.9250.63
1.391.9310.625
1.41.9370.621
1.411.9430.616
1.421.9480.611
1.431.9540.606
1.441.9590.601
1.451.9650.597
1.461.970.592
1.471.9760.587
1.481.9810.582
1.491.9860.578
1.51.9910.573
1.511.9970.569
1.522.0020.563
1.532.0060.557
1.542.010.553
1.552.0140.549
1.562.0190.545
1.572.0240.539
1.582.0280.534
1.592.0310.53
1.62.0350.525
1.612.040.521
1.622.0440.516
1.632.0480.512
1.642.0520.507
1.652.0560.502
1.662.060.497
1.672.0640.493
1.682.0680.488
1.692.0720.482
1.72.0760.477
1.712.080.472
1.722.0830.466
1.732.0860.46
1.742.090.455
1.752.0930.449
1.762.0960.443
1.772.0990.437
1.782.1010.431
1.792.1040.425
1.82.1060.418
1.812.1070.411
1.822.1070.406
1.832.1090.401
1.842.1110.394
1.852.1110.387
1.862.110.382
1.872.110.378
1.882.1110.373
1.892.1130.367
1.92.1130.362
1.912.1130.356
1.922.1120.351
1.932.1110.346
1.942.1110.342
1.952.110.338
1.962.110.333
1.972.1090.328
1.982.1070.324
1.992.1060.322
2.02.1070.319
2.012.1090.315
2.022.1090.309
2.032.1030.304
2.042.1070.3
2.052.1050.296
2.062.1040.292
2.072.1020.288
2.082.1010.284
2.092.0990.281
2.12.0970.278
2.112.0960.276
2.122.0950.273
2.132.0940.27
2.142.0920.267
2.152.0910.264
2.162.0890.261
2.172.0870.259
2.182.0850.257
2.192.0830.255
2.22.0810.254
2.212.080.252
2.222.0790.251
2.232.0780.25
2.242.0770.249
2.252.0760.248
2.262.0760.247
2.272.0760.245
2.282.0760.243
2.292.0760.24
2.32.0750.237
2.312.0730.235
2.322.0710.233
2.332.0690.232
2.342.0690.232
2.352.0680.23
2.362.0670.228
2.372.0660.227
2.382.0650.226
2.392.0640.224
2.42.0630.223
2.412.0620.222
2.422.0610.221
2.432.0610.22
2.442.060.22
2.452.0590.219
2.462.0590.218
2.472.0580.217
2.482.0580.216
2.492.0580.215
2.52.0580.213
2.50632.0560.212
2.51262.0560.212
2.51892.0560.211
2.52532.0560.21
2.53162.0560.21
2.53812.0550.208
2.54452.0540.207
2.5512.0530.207
2.55752.0530.207
2.56412.0520.206
2.57072.0510.205
2.57732.050.205
2.5842.050.205
2.59072.050.205
2.59742.0510.204
2.60422.050.203
2.6112.0490.202
2.61782.0480.203
2.62472.0490.203
2.63162.0480.203
2.63852.0490.202
2.64552.0490.201
2.65252.050.2
2.65962.0490.197
2.66672.0470.196
2.67382.0450.197
2.6812.0450.198
2.68822.0470.198
2.69542.0470.195
2.70272.0450.193
2.712.0440.193
2.71742.0420.193
2.72482.0430.195
2.73222.0440.194
2.73972.0440.193
2.74732.0440.191
2.75482.0430.189
2.76242.040.189
2.77012.040.189
2.77782.0390.189
2.78552.0390.188
2.79332.0370.188
2.80112.0360.188
2.8092.0350.19
2.81692.0360.192
2.82492.0370.192
2.83292.0390.19
2.84092.0390.189
2.8492.0380.188
2.85712.0380.187
2.86532.0370.186
2.87362.0370.187
2.88182.0370.185
2.89022.0360.185
2.89862.0360.184
2.9072.0350.185
2.91552.0360.184
2.9242.0340.183
2.93262.0330.184
2.94122.0330.185
2.94992.0360.186
2.95862.0370.183
2.96742.0360.181
2.97622.0350.181
2.98512.0350.181
2.9942.0350.18
3.0032.0350.178
3.0122.0340.177
3.02112.0330.176
3.03032.0310.178
3.03952.0320.18
3.04882.0350.179
3.05812.0350.175
3.06752.0330.174
3.07692.0320.174
3.08642.0330.174
3.0962.0320.172
3.10562.030.172
3.11532.0290.172
3.1252.030.173
3.13482.030.172
3.14472.0290.172
3.15462.030.171
3.16462.030.169
3.17462.0280.169
3.18472.0270.169
3.19492.0270.169
3.20512.0270.168
3.21542.0260.167
3.22582.0250.169
3.23622.0250.168
3.24682.0250.169
3.25732.0250.169
3.2682.0260.169
3.27872.0270.168
3.28952.0270.167
3.30032.0270.166
3.31132.0270.165
3.32232.0270.164
3.33332.0260.163
3.34452.0260.162
3.35572.0250.16
3.3672.0240.159
3.37842.0230.158
3.38982.0220.158
3.40142.0210.158
3.4132.020.158
3.42472.0190.158
3.43642.0190.159
3.44832.0190.159
3.46022.020.158
3.47222.0190.156
3.48432.0180.156
3.49652.0160.156
3.50882.0160.156
3.52112.0150.157
3.53362.0150.158
3.54612.0160.159
3.55872.0180.158
3.57142.0190.156
3.58422.0190.153
3.59712.0170.151
3.61012.0160.149
3.62322.0130.15
3.63642.0130.15
3.64962.0110.149
3.6632.010.149
3.67652.0080.149
3.692.0070.15
3.70372.0060.151
3.71752.0060.151
3.73132.0040.153
3.74532.0070.156
3.75942.0110.155
3.77362.0130.151
3.78792.0090.149
3.80232.0130.146
3.81682.0060.144
3.83142.0060.142
3.84622.0060.144
3.8612.0050.143
3.8762.0020.141
3.89112.0040.143
3.90632.0010.141
3.92162.0010.14
3.9371.9970.137
3.95261.9960.138
3.96831.9950.138
3.98411.9950.136
4.01.9880.138
4.01611.9910.138
4.03231.9850.137
4.04861.9850.137
4.0651.9830.137
4.08161.9840.142
4.09841.9840.134
4.11521.9830.134
4.13221.9790.131
4.14941.9790.129
4.16671.970.127
4.18411.9650.126
4.20171.9620.128
4.21941.9570.124
4.23731.9470.126
4.25531.9430.13
4.27351.9420.131
4.29181.9360.128
4.31031.9250.127
4.3291.9180.129
4.34781.9090.126
4.36681.8940.126
4.3861.8780.127
4.40531.8580.125
4.42481.8260.125
4.44441.7850.128
4.46431.7260.141
4.48431.6260.148
4.50451.3370.261
4.52491.3161.064
4.54552.0210.9
4.56622.4540.897
4.58722.4070.527
4.60832.4530.33
4.62962.3410.22
4.65122.2620.18
4.67292.2140.178
4.69482.1950.161
4.7172.1690.153
4.73932.1520.149
4.76192.1370.144
4.78472.1240.138
4.80772.110.139
4.83092.1070.139
4.85442.10.135
4.8782.0910.134
4.9022.0880.131
4.92612.0760.132
4.95052.0760.132
4.97512.0680.13
5.02.060.138
5.02512.0730.138
5.05052.070.132
5.07612.0650.13
5.1022.0630.128
5.12822.0590.126
5.15462.0560.124
5.18132.0520.122
5.20832.0460.125
5.23562.0520.127
5.26322.0520.119
5.2912.0470.117
5.31912.0440.116
5.34762.040.113
5.37632.0380.113
5.40542.0340.112
5.43482.030.11
5.46452.030.11
5.49452.0240.108
5.52492.0220.107
5.55562.0170.105
5.58662.0140.107
5.6182.0110.108
5.64972.0070.104
5.68182.0030.103
5.71431.9960.103
5.74711.9930.103
5.78031.9870.105
5.8141.9820.104
5.8481.9750.108
5.88241.9720.103
5.91721.9660.108
5.95241.9580.105
5.9881.9520.104
6.02411.9390.107
6.06061.9230.106
6.09761.9070.114
6.1351.890.123
6.17281.870.125
6.21121.8230.136
6.251.7540.164
6.28931.5770.375
6.32911.9830.751
6.36942.270.396
6.41032.1920.213
6.45162.110.161
6.49352.0580.143
6.53592.0030.132
6.57891.8790.15
6.62251.9150.542
6.66672.2810.224
6.71142.1310.129
6.75682.0990.143
6.80272.0710.113
6.84932.0440.103
6.89662.0160.105
6.94441.9980.11
6.9931.980.106
7.04231.9570.108
7.09221.930.111
7.14291.8990.113
7.19421.8510.127
7.24641.7980.145
7.29931.6460.202
7.35291.7650.588
7.40741.8550.387
7.46271.7530.528
7.51881.8990.88
7.57582.5460.778
7.63362.4920.32
7.69232.3590.195
7.75192.2730.158
7.81252.2240.142
7.8742.1840.128
7.93652.1450.118
8.02.1050.118
8.06452.0780.123
8.13012.0530.141
8.19672.0150.122
8.26451.9240.124
8.33331.7270.187
8.40341.6570.834
8.47462.5810.735
8.5472.470.327
8.62072.4030.191
8.69572.3190.148
8.77192.2780.144
8.84962.260.128
8.92862.240.121
9.0092.2250.106
9.09092.2080.103
9.17432.1950.098
9.25932.1860.096
9.34582.1770.094
9.4342.1710.089
9.52382.1590.084
9.61542.1550.086
9.70872.1440.083
9.80392.1340.08
9.9012.1310.081
10.02.110.074
10.1012.110.144
10.20412.1410.09
10.30932.1180.084
10.41672.1070.102
10.52632.1330.101
10.63832.1270.087
10.75272.1180.08
10.86962.1140.075
10.9892.1080.073
11.11112.0960.071
11.2362.090.074
11.36362.0860.073
11.49432.0770.071
11.62792.0690.067
11.76472.0460.067
11.90482.0060.072
12.04821.8770.238
12.19512.2910.182
12.34572.1420.096
12.52.1240.076
12.65822.1010.07
12.82052.0860.072
12.9872.0790.072
13.15792.0680.07
13.33332.0540.074
13.51352.0280.071
13.69861.9810.147
13.88892.120.179
14.08452.1080.099
14.28572.0880.083
14.49282.0750.081
14.70592.0640.076
14.92542.050.078
15.15152.0420.08
15.38462.0310.082
15.6252.0160.092
15.64952.0160.111
16.1292.0330.128
16.39342.0460.102
16.66672.0290.084
16.94921.9960.084
17.24142.0020.105
17.54391.9550.102
17.85711.9770.179
18.18181.9990.133
18.51851.9540.183
18.86792.0790.186
19.23082.0350.084
19.60781.9770.077
20.01.9290.083
20.40821.8450.11
20.83331.8530.281
21.27662.0480.232
21.73911.9360.139
22.22221.8750.155
22.72731.8240.196
23.25581.7850.251
23.80951.7560.324
24.39021.7510.409
25.01.7690.505
25.6411.8110.592
26.31581.8630.69
27.0271.9830.805
27.77782.1930.848
28.57142.3860.749
29.41182.4610.595
30.3032.4690.464
31.252.4240.379
32.25812.3740.336
33.33332.3290.317
34.48282.3150.367
35.71432.3550.299
37.0372.270.282
38.46152.2050.344
40.02.2490.497
41.66672.4460.439
43.47832.4120.284
45.45452.3080.316
47.6192.3030.364
50.02.2950.392
52.63162.3560.53
55.55562.5160.477

Optical transmission calculator

Free-standing sample in vacuum, normal incidence
Method
Transmittance T
—
Reflectance R
—

Fresnel reflection calculator

Direction
Rp
—
Rs
—
R = (Rp+Rs)/2
—
Phase φp
—
Phase φs
—
Brewster angle θB
—
Critical angle θC
—