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Meeting Materials Science & Technology 2020
Symposium Glasses, Optical Materials, and their Functional Applications: Current Issues in Science & Technology
Presentation Title Enhanced Optical Nonlinearity in Bismuth Borosilicate Glass Dispersed with Eu2O3 Stabilized Gold Nanoparticles
Author(s) Shivani Singla, Venu Gopal Achanta, Om Prakash Pandey, Gopi Sharma
On-Site Speaker (Planned) Shivani Singla
Abstract Scope The biggest challenge faced while incorporating metallic-nanoparticles inside a glass is to control their size, shape, and stability. A new approach to overcome this difficulty is presented here that consists of co-doping of Eu2O3 along with as-prepared gold nanoparticles (GNPs) to prepare GNPs dispersed bismuth borosilicate glass. Eu2O3 forms a covering around GNPs that prevents their loss due to evaporation and coagulation while preparing the glass. The surface plasmon resonance peak position related to GNPs is reported around 585nm. Intensity dependent nonlinear behavior of the glass is evidenced by open and closed aperture Z-scan technique from 1.9-14.38GW/cm fluence range. From open aperture Z-scan data, a switch between saturable absorption to two-photon absorption is observed with the increase in input fluence. The nonlinear refractive index of 4.710-18m/W is obtained for GNPs doped samples at a non-resonant wavelength of 800nm. Prepared glass sample is thermally stable and highly suitable for fiber drawing.
Proceedings Inclusion? Undecided


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Enhanced Optical Nonlinearity in Bismuth Borosilicate Glass Dispersed with Eu2O3 Stabilized Gold Nanoparticles
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