Plasmonic Band-Pass Microfilters for LWIR Absorption Spectroscopy

Table 3

	Silicon nitride
Wavelength (μm)	𝜖1	𝜖2
1.5693	3.8385	0.0000
2.5024	3.7547	0.0000
3.5033	3.6165	0.0000
4.5008	3.4181	0.0000
5.2267	3.2249	0.0000
6.0010	2.9546	0.0000
6.4170	2.7692	0.0000
6.8223	2.5456	0.0000
7.2012	2.2698	0.0015
7.4496	2.0195	0.0173
7.6249	1.7896	0.0665
7.8086	1.5125	0.2002
8.0014	1.2459	0.4723
8.1014	1.1533	0.6623
8.2040	1.1094	0.8740
8.3092	1.1250	1.0856
8.4171	1.1988	1.2693
8.5278	1.3155	1.3977
8.6415	1.4459	1.4517
8.7583	1.5515	1.4279
8.8782	1.5936	1.3428
9.0016	1.5446	1.2327
9.1283	1.3981	1.1455
9.2587	1.1748	1.1269
9.3929	0.9180	1.2027
9.5311	0.6746	1.3681
9.6733	0.4724	1.5915
9.8199	0.3052	1.8378
9.9710	0.1420	2.0966
10.1268	−0.0460	2.3956
10.2875	−0.2536	2.7883
10.4535	−0.4308	3.3210
10.6248	−0.4953	4.0036
10.8019	−0.3635	4.7953
10.9850	0.0218	5.6136
11.1744	0.6732	6.3532
11.3704	1.5576	6.9128
11.5734	2.6011	7.2128
11.7838	3.7055	7.2086
12.0021	4.7635	6.8976