Experimental Study of the Resonant Response of Monolayer Colloidal Crystal Waveguide by Symmetric Probing

The extra-interfacial manifestations induced by the waveguide resonance properties of monolayer colloidal crystals (MCCs) have been well discovered by symmetrically probing their reflectance spectra. To clearly analyze the origin of the resonance peaks in the spectra obtained by reflection probing, experimental and calculated values were compared and the results for monolayers with different arrangement structures were compared. The different contributions to the resonance modes by different light bands entering the MCC were elucidated. In addition, the experimental results visualize that changing the incident angle, lattice and polarization can effectively modulate the wavelength position and intensity of the characteristic peaks induced by the resonance of the monolayer waveguide.