EKHI

Materials

Curve 1

Temperature, K: 77 Wavelength Range, µm: 4.05-22.2 Geometry θ: 0° Composition (weight percent), Specifications, and Remarks: Single crystals from Vinor Laboratories; cut perpendicular to the c-axis; polished.

Wavelength / 𝜇m	Emittance /
4.05	0.814
4.0	0.832
5.0	0.851
5.51	0.881
6.27	0.912
6.8	0.907
7.26	0.912
7.42	0.927
7.69	0.917
8.68	0.948
9.51	0.964
10.2	0.983
10.4	0.979
10.5	0.958
10.6	0.905
10.8	0.31
11.0	0.149
11.2	0.097
11.8	0.06
12.3	0.071
12.6	0.121
13.0	0.509
13.4	0.62
14.0	0.715
14.6	0.75
15.6	0.788
17.0	0.818
17.0	0.861
17.1	0.82
18.4	0.843
22.2	0.876

Curve 2

Temperature, K: 77 Wavelength Range, µm: 18.8-46.6 Geometry θ: 0° Composition (weight percent), Specifications, and Remarks: Above specimen and condition.

Wavelength / 𝜇m	Emittance /
18.8	0.833
19.8	0.835
21.3	0.852
22.9	0.857
24.3	0.88
25.5	0.908
25.7	0.88
26.3	0.899
27.1	0.894
28.0	0.922
28.2	0.91
28.9	0.955
30.2	0.968
31.1	0.99
31.3	0.944
31.5	0.888
31.6	0.814
31.8	0.796
32.1	0.873
32.3	0.783
32.7	0.362
32.9	0.255
33.1	0.219
34.2	0.151
35.0	0.11
36.8	0.127
37.1	0.179
37.4	0.268
38.2	0.482
38.8	0.57
39.4	0.619
40.3	0.673
40.7	0.678
40.8	0.706
41.4	0.725
42.0	0.762
42.7	0.774
43.2	0.811
44.1	0.901
44.7	0.919
45.4	0.971
45.7	0.921
46.4	0.405
46.6	0.336

Curve 3

Temperature, K: 77 Wavelength Range, µm: 4.50-22.7 Geometry θ: 0° Composition (weight percent), Specifications, and Remarks: Similar to the above specimen and conditions except crystal cut parallel to c-axis.

Wavelength / 𝜇m	Emittance /
4.5	0.819
4.5	0.841
4.81	0.857
5.31	0.852
5.8	0.881
6.56	0.915
7.1	0.91
7.58	0.928
7.85	0.92
8.05	0.938
8.41	0.932
9.25	0.979
9.77	0.985
10.3	0.99
10.4	0.856
10.7	0.532
10.8	0.245
10.9	0.144
11.1	0.08
11.7	0.039
12.0	0.039
12.2	0.057
12.6	0.246
12.9	0.452
13.1	0.555
13.3	0.602
13.6	0.66
14.2	0.726
14.8	0.781
15.4	0.79
16.2	0.812
17.3	0.818
18.7	0.818
19.1	0.851
20.3	0.856
20.5	0.871
20.8	0.867
21.6	0.884
22.1	0.885
22.2	0.864
22.6	0.86
22.7	0.878

Curve 4

Temperature, K: 77 Wavelength Range, µm: 18.9-46.4 Geometry θ: 0° Composition (weight percent), Specifications, and Remarks: Above specimen and conditions.

Wavelength / 𝜇m	Emittance /
18.9	0.846
20.5	0.861
21.7	0.894
22.2	0.867
23.2	0.897
23.8	0.926
24.0	0.91
25.1	0.965
25.6	0.978
25.9	0.957
26.2	0.97
27.0	0.958
27.3	0.914
27.6	0.819
28.4	0.535
28.8	0.487
29.3	0.468
30.7	0.485
31.2	0.492
31.8	0.41
32.3	0.449
32.6	0.248
32.9	0.163
33.2	0.124
33.7	0.101
34.3	0.108
35.0	0.082
36.5	0.09
37.0	0.124
37.5	0.169
37.8	0.262
38.5	0.325
39.3	0.382
39.5	0.409
40.0	0.407
40.6	0.426
40.7	0.445
41.8	0.474
42.9	0.541
43.1	0.532
44.9	0.658
45.3	0.693
46.0	0.474
46.4	0.331

Curve 1

Temperature, K: 77 Wavelength Range, µm: 4.05-22.2 Geometry θ'ω': 0° 0° Composition (weight percent), Specifications, and Remarks: Single crystal from Vinor Laboratory; cut perpendicular to the optic axis; polished; author measured and assumed ρ = 1-ε.

Wavelength / 𝜇m	Reflectance /
4.05	0.19
4.06	0.169
5.0	0.152
5.51	0.126
6.27	0.087
6.8	0.096
7.26	0.087
7.42	0.077
7.69	0.09
8.68	0.056
9.51	0.038
10.2	0.021
10.4	0.026
10.5	0.049
10.6	0.101
10.8	0.689
11.0	0.845
11.2	0.9
11.8	0.935
12.3	0.926
12.6	0.88
13.0	0.489
13.4	0.38
14.0	0.286
14.6	0.248
15.6	0.213
17.0	0.185
17.0	0.142
17.1	0.183
18.4	0.16
22.2	0.13

Curve 2

Temperature, K: 77 Wavelength Range, µm: 18.8-46.6 Geometry θ'ω': 0° 0° Composition (weight percent), Specifications, and Remarks: Above specimen and conditions.

Wavelength / 𝜇m	Reflectance /
18.8	0.175
19.8	0.17
21.3	0.159
22.9	0.151
24.3	0.13
25.5	0.097
25.7	0.125
26.3	0.108
27.1	0.113
28.0	0.085
28.2	0.094
28.9	0.048
30.2	0.033
31.1	0.011
31.3	0.048
31.5	0.113
31.6	0.189
31.8	0.203
32.1	0.131
32.3	0.211
32.7	0.647
32.9	0.761
33.1	0.789
34.2	0.862
35.0	0.896
36.8	0.884
37.1	0.836
37.4	0.752
38.2	0.533
38.8	0.437
39.4	0.384
40.3	0.325
40.7	0.33
40.8	0.3
41.4	0.288
42.0	0.243
42.7	0.231
43.2	0.196
44.1	0.109
44.7	0.093
45.4	0.039
45.7	0.081
46.4	0.604
46.6	0.674

Curve 3

Temperature, K: 77 Wavelength Range, µm: 8.00-80.6 Geometry θ'ω': 0° 0° Composition (weight percent), Specifications, and Remarks: Above specimen and conditions except reflectance measured directly.

Wavelength / 𝜇m	Reflectance /
8.0	0.074
8.1	0.057
8.19	0.059
8.3	0.065
8.38	0.072
8.48	0.071
8.59	0.071
8.68	0.068
8.78	0.068
8.88	0.081
8.98	0.041
9.07	0.02
9.17	0.019
9.28	0.02
9.36	0.025
9.51	0.03
9.57	0.017
9.68	0.03
9.79	0.028
9.88	0.026
9.99	0.02
10.1	0.021
10.2	0.021
10.3	0.021
10.4	0.033
10.5	0.036
10.6	0.066
10.7	0.15
10.8	0.344
10.9	0.632
11.0	0.766
11.1	0.806
11.1	0.816
11.2	0.829
11.3	0.865
11.4	0.865
11.5	0.871
11.6	0.878
11.7	0.893
11.8	0.893
11.9	0.897
12.0	0.895
12.1	0.89
12.2	0.881
12.3	0.891
12.3	0.88
12.5	0.86
12.6	0.836
12.7	0.783
12.8	0.681
12.9	0.618
13.0	0.514
13.0	0.468
13.2	0.418
13.3	0.406
13.4	0.352
13.6	0.345
13.6	0.329
13.7	0.32
13.8	0.309
13.9	0.284
14.0	0.279
14.1	0.262
14.2	0.264
14.3	0.243
14.4	0.237
14.6	0.233
14.6	0.211
14.7	0.219
14.9	0.219
15.1	0.204
15.2	0.201
15.3	0.198
15.5	0.189
15.6	0.193
15.8	0.197
15.9	0.175
16.0	0.201
16.1	0.187
16.3	0.2
16.3	0.161
16.6	0.182
16.7	0.16
17.0	0.185
17.1	0.157
17.4	0.174
17.8	0.173
18.0	0.148
18.1	0.156
18.1	0.141
18.5	0.151
18.7	0.145
18.8	0.161
18.9	0.144
19.2	0.176
19.4	0.176
19.6	0.182
19.9	0.157
20.2	0.162
20.6	0.16
20.8	0.164
20.8	0.153
21.3	0.165
21.3	0.155
22.0	0.153
22.3	0.146
22.6	0.155
22.7	0.142
23.0	0.136
23.4	0.144
23.6	0.16
24.0	0.133
24.1	0.144
24.3	0.133
25.0	0.131
25.0	0.1
25.5	0.114
25.5	0.096
26.0	0.115
26.5	0.109
27.2	0.113
27.7	0.089
27.7	0.107
28.2	0.096
28.2	0.068
29.2	0.045
30.3	0.033
31.3	0.021
31.5	0.039
31.5	0.073
32.4	0.132
31.9	0.146
32.3	0.171
32.1	0.171
32.1	0.214
32.7	0.26
32.8	0.489
32.8	0.664
33.0	0.759
33.2	0.796
33.7	0.814
34.1	0.831
34.6	0.852
34.0	0.869
34.7	0.869
34.7	0.884
34.7	0.889
35.3	0.9
36.0	0.918
36.6	0.899
36.9	0.893
36.8	0.86
37.2	0.849
37.5	0.768
38.0	0.719
37.9	0.669
38.3	0.614
38.3	0.587
38.6	0.577
38.8	0.544
38.9	0.518
39.5	0.486
40.2	0.456
40.7	0.426
40.8	0.397
41.2	0.38
41.8	0.348
42.0	0.328
42.2	0.314
42.2	0.288
42.9	0.264
43.3	0.243
43.3	0.221
43.3	0.193
44.1	0.172
43.9	0.138
44.1	0.103
44.1	0.07
44.1	0.042
44.8	0.037
45.3	0.199
45.5	0.346
45.5	0.526
45.5	0.613
45.7	0.662
45.7	0.692
46.5	0.707
47.4	0.741
48.1	0.783
48.8	0.831
51.0	0.835
52.4	0.762
53.2	0.585
54.6	0.436
55.9	0.412
58.8	0.38
58.1	0.363
61.3	0.343
62.9	0.327
66.7	0.327
66.2	0.317
71.4	0.326
69.9	0.312
69.4	0.291
75.8	0.28
80.6	0.28
79.4	0.259

Curve 4

Temperature, K: 350 Wavelength Range, µm: 4.50-22.7 Geometry θ'ω': 0° 0° Composition (weight percent), Specifications, and Remarks: Similar to curve 3 specimen and conditions except cut parallel to c-axis.

Wavelength / 𝜇m	Reflectance /
4.5	0.18
4.5	0.158
4.81	0.143
5.31	0.15
5.8	0.12
6.56	0.083
7.1	0.091
7.58	0.07
7.35	0.08
8.05	0.066
8.41	0.064
9.25	0.025
9.77	0.011
10.3	0.011
10.4	0.144
10.7	0.469
10.8	0.753
10.9	0.858
11.1	0.913
11.7	0.96
12.0	0.967
12.2	0.939
12.6	0.744
12.9	0.546
13.1	0.454
13.3	0.39
13.6	0.338
14.2	0.272
14.8	0.221
15.4	0.208
16.2	0.19
17.3	0.178
18.7	0.186
19.1	0.151
20.3	0.141
20.5	0.125
20.8	0.133
21.6	0.121
22.1	0.117
22.2	0.133
22.6	0.141
22.7	0.126

Curve 5

Temperature, K: 350 Wavelength Range, µm: 18.9-46.4 Geometry θ'ω': 0° 0° Composition (weight percent), Specifications, and Remarks: Above specimen and conditions.

Wavelength / 𝜇m	Reflectance /
18.9	0.159
20.5	0.147
21.7	0.12
22.2	0.144
23.2	0.112
23.8	0.085
24.0	0.101
25.1	0.046
25.6	0.032
25.9	0.052
26.2	0.039
27.0	0.051
27.3	0.096
27.6	0.189
28.4	0.466
28.8	0.516
29.3	0.533
30.7	0.525
31.2	0.517
31.8	0.587
32.3	0.558
32.6	0.758
32.9	0.836
33.2	0.872
33.7	0.897
34.3	0.894
35.0	0.92
36.5	0.914
37.0	0.874
37.5	0.829
37.8	0.746
38.5	0.674
39.3	0.619
39.5	0.597
40.0	0.596
40.6	0.582
40.7	0.554
41.8	0.529
42.9	0.467
43.1	0.473
44.9	0.35
45.3	0.318
46.0	0.53
46.4	0.672

Infrared Spectral Emittance and Optical Properties of Yttrium Vanadate