Molecular dynamic simulation and experimental
study on the mechanisms of high critical current density
in superconductors
Summary:
The aim of this project is to establish
a collaboration between the Institute for Superconducting and Electronic
Materials (ISEM) and the team at Nanjing University to study the
mechanisms of high critical current density (or flux pinning) in
superconductors.
Molecular dynamic simulation combined with experimental techniques,
such as transport and magnetic measurements will be used. The results
of this work will expand our understanding of the pinning mechanisms
of high temperature superconductors and MgB2 superconductors, with
the hope of further enhancing the current carrying capacity, and
therefore promoting the practical applications of superconductors.
Chief Investigator(s):
Dr J Xi; A/Prof Y Yu; Prof JF Chicharo;
Dr E Li; A/Prof H Ye
2005 $
2006 $
2007 $
Total $
$18,000
$18,000
-
$36,000
Title:
Measuring the linewidth enhancement
factor and optical feedback level factor of semiconductor lasers based on optical feedback self-mixing interferometry
Summary:
This project aims to develop
a high performance solution for the challenging problem
of measuring the linewidth enhancement factor (LEF)
of semiconductor lasers (SLs) and the optical feedback
level factor, C, for the optical feedback self-mixing
(OFSM) systems. Specific outcomes of the research include
(1) a new model for an optical feedback self-mixing
effect, (2) a new approach for measuring LEF and C based
on the proposed model, (3) signal processing algorithms
for improving the performance of the proposed approach,
and (4) an OFSM system prototype based on the new model
and algorithms.
