Table 2.

Evaluation of noise and efficiency of the investigated disk-shaped waveguide materials derived from the calibrations shown in Fig. 3

Peak area:	1600–1460 cm−1
	Slope	Intercept	Standard deviation	Noise	Efficiency
Diamond	0.2784	0.3811	1.1557	0.0018	155
Silicon	0.1883	0.1597	0.7604	0.0020	94
GaAs	0.1328	0.1433	0.7108	0.0006	221