Table 1.

Optical properties of Au-coated substrates at λ = 532 nm.

Support	hAu [nm]	R	T	A	αAu [cm–1]
Glass	10	0.34	0.31	0.35	7.56·105
Glass	30	0.61	0.12	0.27	3.90·105
Glass	50	0.68	0.07	0.25	3.08·105
Glass	100	0.75	0.00	0.25	5.69·106,a
Si	30	0.71	0.00	0.29	—b

^aGiven value refers to the bulk value for Au [32].

^bIndeterminable because of the opacity of the Si support.