Title

SECOND HARMONIC GENERATION AS AN OPTICAL PROBE OF BURIED INTERFACES

Author

Sergio Felipe Beltrán Valencia

Contributor

Bernardo Mendoza (Thesis Adviser)

Access level

Open Access

Summary or description

"In this manuscript, we present a method for the determination of defects in the crystalline morphology of buried surfaces using SHG. This is done by calculating the second order nonlinear susceptibility using DFT, length gauge and the cut function for surface responses. We analyzed the change in the SHG response of GaAs 110 crystalline slabs due to systematically induced defects. We found that SHG can be used to obtain the position of periodical defects like the displacement of a atom in the periodic crystalline cell, also, SHG can be used to detect dislocation of sections in the slab and misfits between stacked slabs. Finally, we give a scheme for the experimental determination of this defects by using the values of nonlinear susceptibility measurements."

Publish date

August, 2019

Publication type

Master thesis

Publication version

Published Version

Format

application/pdf

Language

English

Coverage

León, Guanajuato

Audience

General public

Citation suggestion

Beltrán Valencia, (2019). "Second Harmonic Generation as an optical probe of buried interfaces". Tesis de Maestría en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. León, Guanajuato. 46 pp.

Source repository

REPOSITORIO INSTITUCIONAL DEL CIO

Downloads

283

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