Rare earth activated 1-D photonic crystals were fabricated by rf-sputtering technique. The cavity is constituted by an Er3+-doped SiO2 active layer inserted between two Bragg reflectors consisting of ten pairs of SiO2/TiO2 layers. SEM microscopy is employed to put in evidence the quality of the sample, the homogeneities of the layers thickness and the good adhesion. NIR transmittance and variable angle reflectance spectra confirm that the presence of a stop-band from 1500 nm to 2000 nm with a cavity resonance centered at 1749 nm at 0° with a quality factor Q is about 890. The influence of the cavity on the 4I13/2 -> 4I15/2 emission band of Er3+ ion is also demonstrated.
"High quality factor dielectric multilayer structures fabricated by rf-sputtering"
A Chiasera;S Varas;M Ferrari
2012
Abstract
Rare earth activated 1-D photonic crystals were fabricated by rf-sputtering technique. The cavity is constituted by an Er3+-doped SiO2 active layer inserted between two Bragg reflectors consisting of ten pairs of SiO2/TiO2 layers. SEM microscopy is employed to put in evidence the quality of the sample, the homogeneities of the layers thickness and the good adhesion. NIR transmittance and variable angle reflectance spectra confirm that the presence of a stop-band from 1500 nm to 2000 nm with a cavity resonance centered at 1749 nm at 0° with a quality factor Q is about 890. The influence of the cavity on the 4I13/2 -> 4I15/2 emission band of Er3+ ion is also demonstrated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
