Nonlinear optical phenomena in mesoporous SiO2 and Si/SiO2 nanoparticles

Physical optics
Authors:
Mastalieva Viktoriia A. Neplokh Vladimir V. Aybush Arseny V. Stovpiaga Ekaterina Yu. Eurov Daniil A. Vinnichenko Maxim Ya. Karaulov Danila A. Kirilenko Demid A. Golubev Valery . Smirnov Alexander N. Makarov Sergey V. Kurdyukov Dmitry A. Mukhin Ivan S.
Abstract:

In this work we study the optical response of mesoporous SiO2 and Si/SiO2 nanoparticles considering different fabrication and post-synthesis treatment processes. We show that thermal annealing of mesoporous Si/SiO2  nanoparticles transforms the Si phase from amorphous to crystalline and enhances the second harmonic generation response.