A Self-Mixing Imaging System Based on an Array of Vertical-Cavity Surface-Emitting Lasers
Speaker: John Tucker, ITEE
When: 2004-09-07 14:00:00
Venue: 78-420
Host: Dr. Aleksandar Rakic
Abstract:The aim of this research is to build a prototype imaging system
based on the self- mixing effect using an array of Vertical-Cavity
Surface-Emitting Lasers (VCSELs). In many self-mixing imaging
systems the laser beam is scanned across the surface of an object to
obtain a map of data. The length of time involved in taking a
single scan prohibits the construction of a series of images in real
time. With the use of an array of VCSELs the data can be taken for
a number of closely spaced points across the object surface
simultaneously. Gathering the data in this way has the potential to
allow temporal changes in the shape of the object to be shown at
video frame rates.
The main area where the system has the most potential is in
biomedical applications like blood perfusion where monitoring
temporal changes in real time over a large area would be extremely
useful. Other important areas like breast elastography and neonatal
brain activity are also being considered as possible biomedical
applications for the system.
This seminar will outline what work has been carried out by other
researchers in this field and how the self-mixing effect can be used
to measure the distance, displacement and velocity of an object.
The work that has been done so far on the construction of the system
will also be presented as well as a timeline for the rest of the
work that needs to be completed.
Biography:John Tucker graduated from the University of Queensland with First
Class Honours in an Electrical Engineering degree in 2001. He is
currently undertaking a PhD at the same institution.
Type: Ph.D confirmation
Contact:Dr. Aleksandar Rakic, seminar host (rakic@itee.uq.edu.au)
or Guido Governatori (ITEE seminar co-ordinator)
(guido@itee.uq.edu.au)