Solid phase formation of silicon nanocrystals by bulk ultrafast laser-matter interaction.
Ultrashort pulse laser interaction with silica-silicon interfaces is presented as a means for all-solid-phase formation of high-purity silicon nanoparticles in the absence of ablation plumes or any substrate intermixing with surfaces in ambient air. Transmission electron microscopy and Raman spectroscopy provide definitive evidence for creation of nanocrystals in the silica host, while compressive stress in the silicon substrate corroborates the formation of optical waveguides parallel to the tracks.
Nejadmalayeri
Amir H
AH
1Photonics Group, Department of Electrical and Computer Engineering and Institute for Optical Sciences, University of Toronto, Toronto, Ontario M5S 3G4, Canada. nejadmal@mit.edu
Scrutton
Philip
P
Mak
Jacky
J
Helmy
Amr S
AS
Herman
Peter R
PR
Burghoff
Jonas
J
Nolte
Stefan
S
Tünnermann
Andreas
A
Kaspar
Jörg
J