Non-conventional spectroscopy of low-dimension semiconductor films

• Grant number: 91/03543-4
• Support Opportunities: Research Projects - Thematic Grants
• Start date: June 01, 1992
• End date: November 30, 1996
• Field of knowledge: Physical Sciences and Mathematics - Physics
• Principal Investigator: Luiz Antonio de Oliveira Nunes
• Grantee: Luiz Antonio de Oliveira Nunes
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

The objective of this project is to use the techniques of modern optics to understand the basic properties of supernetwork type semiconductor films grown by MBE (Molecular Beam Epitaxy). Through techniques such as the absorption of two photons, wave mixture, ultrashort-pulse spectroscopy, and Raman spectroscopy, we hope to understand the phenomenon of relaxation of hot carriers, excitation coherence loss, binding energy of excitons, quantum confinement, phonon scattering. This concerns, however, a project with a single objective, but using diverse optical techniques already used by the Optics Group on other problems. (AU)