Fig. 1. Electromagnetic wave distribution in multilayer films

Fig. 2. Theoretical transmission spectrum of narrow-band filter

Fig. 3. Comparison of transmission spectra of narrowband filter with Gaussian, Lorentzian and rectangular line-shapes for beam linewidths of (a) 0.5 nm, (b) 2.5 nm, (c) 4.5 nm, and (d) 9.0 nm

Fig. 4. The curves of (a) central wavelength, (b) peak transmittance of transmission band, (c) full width at half maximum and (d) rectangle degree versus beam linewidth under Gaussian, Lorentzian and rectangular line-shape conditions

Fig. 5. Comparison of the overall transmission spectra of filters with different substrate thicknesses for linewidths of (a) 0.5 nm, (b) 2.5 nm, (c) 4.5 nm, and (d) 9.0 nm under the Gaussian line-shape condition

Fig. 6. Variation curves of transmittance at 1064 nm with substrate thickness for monolayer substrates with linewidths of (a) 0.5 nm; (b) 2.5 nm; (c) 4.5 nm, and (d) 9.0 nm under the Gaussian line-shape condition

Fig. 7. Gaussian line-shape conditions with linewidths of 0.5 nm, 2.5 nm, 4.5 nm, and 9.0 nm, (a) T_max, and (b) FWHM versus substrate thickness curves