The results showed that the nonlinear refractive index of SiO2 and GO nanoparticles and nanohybrid composite (0.5:1,1:1,2:1) ( GO – SiO 2 ) changed and has a negative sign. It was observed that the nonlinear r
We determine the nonlinear refractive index of fused silica, n 2(SiO2) = 2.9 × 10−20 m2/W, in agreement with literature values. Subsequent z-scan measurements of single-crystalline gold films reveal a damage threshold of 0.22 TW/cm2 and approximate upper limits of the ...
et al. Z-scan measurement of the nonlinear refractive index of graphene. Opt Lett. 37, 1856–1858 (2012). 18. Wang, Y. et al. Ultrafast recovery time and broadband saturable absorption properties of black phosphorus suspension. Appl. Phys. Lett. 107, 091905 (2015). 19. Zhang, S. et ...
Due to the high nonlinear refractive index of As2S3, a nonlinear coefficient of ~4100 W− 1 km− 1 is resulted in the waveguide with an effective mode area of 2.9 μm2. The insertion loss using the As2S3 waveguide is about 10 dB, which includes the fiber coupling loss and the ...
where λ is the wavelength, n2 the nonlinear refractive index of optical materials, I the intensity of the laser beam, z the direction of propagation and L the cumulative length of optical materials along the beamline. Intense efforts have been made to reduce this B-integral; Namely, (i) us...
Ueda: Measurement of nonlinear refractive index by time-resolved z-scan technique, Opt Commun 160, p.125–129 (1999) ADS Google Scholar R. QuinteroTorres, M. Thakur: Measurement of the nonlinear refractive index of polydiacetylene using Michelson interferometry and z-scan, J Appl Phys 85, p...
where n0, n2, and I are the linear refractive index, nonlinear refractive index, and the laser light intensity, respectively. The nonlinear refractive index (n2) is related with the third-order nonlinear susceptibility (χ(3)) by the following expression [21]. (12.25)n2=12π2χ3/n02 When...
Keywords:Teo『-siO2composite;Electrochemicallyinducedsol-gelmethod;Third—ordernonlinearities;Z—scan Nonlinearoptical(NL01materialsareverypromisingfornon.1inearopticaldevicetechnology.TeOxmaterialsare oneofthemostimportantNL0materialsbecauseoftheirexcellentnonlinearrefractiveindex『11.Mostofthestudies aboutTeOxmaterial...
After the silica coating, the longitudinal plasmon peak red-shifts by 10–30 nm due to the increased refractive index of the surrounding medium, as shown in Supplementary Fig. S2 (Ref. 44). The CaF2:Yb3+,Er3+ NCs were synthesized through a sodium co-doping co-precipitation route followed ...
Using self – phase modulation experiments, we characterize a waveguide nonlinear parameter of 7 W−1/m and nonlinear refractive index of 3.71 × 10−18 m2/W. GeSbS waveguides are used to generate supercontinuum from 1280 nm to 2120 nm at the −30 dB level. The ...