A joint project of the Graduate School, Peabody College, and the Jean & Alexander Heard Library

Title page for ETD etd-03192010-154114

Type of Document Master's Thesis
Author Deepchand, Vimal
Author's Email Address v.deepchand@vanderbilt.edu
URN etd-03192010-154114
Title Characterization of the optical properties of gallium arsenide as a function of pump intensity using picosecond ultrasonics
Degree Master of Science
Department Physics
Advisory Committee
Advisor Name Title
Norman H. Tolk Committee Chair
Kalman Varga Committee Member
  • GaAs
  • Coherent Acoustic Phonons
  • Pump-probe
  • picosecond ultrasonics
Date of Defense 2010-02-17
Availability unrestricted
We report the observation of coherent acoustic phonon oscillations in GaSb(20 nm)/GaAs near the band gap of GaAs at room temperature. A photogenerated longitudinal acoustic phonon wave travels from the top surface of GaSb and into the GaAs substrate and gives rise to oscillations which provide useful information on the properties of GaAs as a function of depth and time. Using a time-resolved pump-probe technique, we investigate how the characteristics of the phonon oscillations change with intensity in the low-intensity regime near the band gap of GaAS and propose our technique as a method to quantify the optical properties of GaAs at room temperature.
  Filename       Size       Approximate Download Time (Hours:Minutes:Seconds) 
 28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access 
  MS_thesis.pdf 379.36 Kb 00:01:45 00:00:54 00:00:47 00:00:23 00:00:02

Browse All Available ETDs by ( Author | Department )

If you have more questions or technical problems, please Contact LITS.