EKHI

Materials

Curve 1

Temperature K: 298 Wavelength Range, μ: 12.5-38.4 Geometry θ θ' ω': ~0° ~0° Composition (weight percent), Specifications and Remarks: Optically polished; thickness 2 mm; uncorrected for reflection losses.

Wavelength / 𝜇m	Transmittance /
12.5	0.25
12.8	0.22
13.1	0.19
13.5	0.18
13.5	0.18
13.8	0.25
14.2	0.36
14.7	0.32
15.1	0.3
15.6	0.27
16.1	0.05
16.3	0.03
16.6	0.05
17.2	0.18
17.8	0.17
18.5	0.2
19.2	0.2
19.3	0.14
20.0	0.25
20.8	0.28
21.7	0.37
22.7	0.36
23.8	0.36
25.0	0.36
26.3	0.37
27.7	0.37
29.4	0.37
31.2	0.37
33.3	0.38
34.4	0.39
35.7	0.37
37.0	0.37
38.4	0.36

Far infrared transmission of silicon and germanium [11]