| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
Bismuth Borosilicate Glass Containing Eu2O3 Stabilized Gold Nanoparticles with High Third-order Optical Nonlinearity |
| 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 in glass is controlling 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 bismuthborosilicate 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 to be around 585nm. Prepared glass samples are thermally stable and highly suitable for fiber drawing. Intensity-dependent nonlinear behavior of the glass is evidenced by open and closed aperture Z-scan technique from 1.9-14.38 GW/cm^(-2) range. From open aperture Z-scan data, a switch between saturable absorption to two-photon absorption is observed with the increase in input fluence. Nonlinear refractive index of 4.7 × 10^(-18) m^2/W is obtained for GNPs-doped samples at a non-resonant wavelength of 800nm. |