Silicon nanophotonics: light emission, wavelength-selective waveguiding and laser-induced thermal effects

Leonid Khriachtchev; Markku Räsänen; Sergei Novikov

doi:10.1117/12.722135

22 May 2007 Silicon nanophotonics: light emission, wavelength-selective waveguiding and laser-induced thermal effects

Leonid Khriachtchev, Markku Räsänen, Sergei Novikov

Proceedings Volume 6591, Nanotechnology III; 65910D (2007) https://doi.org/10.1117/12.722135
Event: Microtechnologies for the New Millennium, 2007, Maspalomas, Gran Canaria, Spain

Abstract

Optical spectroscopic characterization of silica layers containing silicon nanocrystals (Si-nc) is described in detail. Red- NIR photoluminescence (PL) is studied and correlations of the PL with optical and structural properties are analyzed. The surface mechanism of PL involving Si=O bonds is supported by our results. Wavelength-selective optical waveguiding by Si-nc/SiO₂ layers is studied. The found spectral filtering allows optical properties of Si-nc/SiO₂ layers to be measured. Laser-induced thermal effects on structural and optical properties of free-standing Si-nc/SiO₂ films are reported. The obtained results suggest very efficient Si-SiO₂ phase separation by intense laser light. Laser-controlled stress of Si-nc in silica is demonstrated. The laser manipulations with Si-nc stress offer an approach to Si-nc memory with an extremely long retention time, which can be written, read, and erased by optical means.

Citation Download Citation

Leonid Khriachtchev, Markku Räsänen, and Sergei Novikov "Silicon nanophotonics: light emission, wavelength-selective waveguiding and laser-induced thermal effects", Proc. SPIE 6591, Nanotechnology III, 65910D (22 May 2007); https://doi.org/10.1117/12.722135

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