M.S. Thesis Presentation by Nikolaos Beratlis
Friday, May 9, 2003

(Dr. Marc Smith, advisor)

"VCSEL Cooling Optimization Using Synthetic Air Micro Jets"


A numerical approach to optimizing the heat transfer coefficient of a specially designed synthetic jet actuator targeting a one-dimensional vertical cavity surface emitting laser (VCSEL) has been developed and used in this study. In particular, a computational fluid dynamics (CFD) code has been integrated into an optimization routine in order to automatically find the horizontal and vertical positions and the associated impingement angle of the jet exit relative to the VCSEL that maximizes the heat transfer coefficient from the array given only an initial configuration. Results for various operating frequencies of the actuator, thermal boundary conditions of the VCSEL and flow regimes are presented in this thesis. In addition, the flow field of the synthetic jet and the heat transfer mechanisms for each optimum configuration are discussed.