Brett D. DePaola
Professor
Address:	333 Cardwell Hall
Phone:	(785) 532-1623
Lab Phone:	(785) 532-6777
E-mail:	depaola@phys.ksu.edu
Personal Webpage
Ph.D. University of Texas, Dallas, 1984
M.S. Miami University, 1979
B.S. Miami University, 1977

Research Area

Atomic, Molecular & Optical Physics

Our group studies coherent excitation and cold collision processes. In many of our experiments, the observed processes take place in a magneto-optical trap. In such cases, our principle diagnostic technique is known as MOTRIMS (magneto-optical trap recoil ion momentum spectroscopy) which is used to probe excited state fractions in the MOT. The coherent excitation processes presently under study include STIRAP (stimulated Raman adiabatic passage), and EIT (electromagnetically induced transparency. The cold collision processes include photo-association using both narrow linewidth cw lasers and broadband ultrafast lasers. In the latter case, coherent control of the atomic processes in a MOT is the ultimate goal.

Research Support

• Department of Energy

Recent Selected Publications

• G. Veshapidze, M. L. Trachy, M. H. Shah, and B. DePaola, "Reducing the Uncertainty in Laser Beam Size Measurement," Appl. Opt. 42, 8197-8199 (2006).
• M. H. Shah, H. A. Camp, M. L. Trachy, X. Fléchard, M. A. Gearba, H. Nguyen, R. Brédy, S. R. Lundeen, and B. D. DePaola, “Relative Charge Transfer Cross Section from Rb(4d)”, Phys. Rev. A 72 024701 (2005).
• R. Brédy, T. G. Lee, H. A. Camp, H. Awata, and B. D. DePaola, “Entropy Lowering in Ion-Atom Collisions”, H. Nguyen, Phys. Rev. A 71 062714 (2005).
• H. A. Camp, M. H. Shah, M. L. Trachy, O. L. Weaver, and B. D. DePaola, “Numerical Exploration of Coherent Excitation in Three-Level Systems”, Phys. Rev. A 71 053401 (2005).