Paper on Designing Costless THz Paper Optics

Table 1

Values of refractive indices and absorption coefficients for frequency 0.3 THz. (g) corresponds to samples with glue.

Paper name	[mm] ± 0.01 mm	α [cm^−1]		Δ [%]
3D_orientA	3.97	2.190	1.399	—
3D_orientB	4.04	1.694	1.391	—
3D_orientC	4.14	1.752	1.395	—
White	0.63	2.122	1.488	0.33
White (g)	0.65	2.024	1.483
Glossy	1.93	2.076	1.539	0.33
Glossy (g)	1.94	2.378	1.544
Black	2.26	2.529	1.577	0.31
Black (g)	2.33	2.368	1.572
Gray	1.75	2.153	1.546	0.37
Gray (g)	1.77	1.852	1.552
Crossed	0.67	2.458	1.500	1.00
Crossed (g)	0.69	2.121	1.515
Green	2.62	2.037	1.436
Green (g)	2.62	2.029	1.434	0.14
Green (g) + food foil	2.69	2.008	1.427	0.58
Green (g) + office foil	2.71	2.071	1.431	0.31
Green (g) + thick foil	2.70	2.058	1.437	0.11