John Cooper

Professor. Ph.D. Imperial College, London, 1962. Fellow American Physical Society, 1971-present; Fellow, American Association for the Advancement of science, 1984-present; John Simon Guggenheim Memorial Foundation Fellow, 1978.

Professor Cooper is conducting both theortetical and experimental research in the dynamics of Bose-Einstein condensates and in the general area of the interaction of light with atomic systems. Current theoretical research includes several topics, for example: (a) the formulation for ultra-cold optical atom traps of the particle drift and diffusion coefficients due to N-body interactions (which gives rise to a limit on trap density) and of the redistribution of radiation in slow collisions under conditions where radiation during the collision is important; (b) the scattering of laser light from them including many-body interactions; (c) propogation of intense near resonant radiation with initiation by amplified spontaneous emission or by the transient Rabi-oscillation specturm associated with the self phase modulation of the excitation pulse; (d) a study of initiatin, propagation, and statistics effects in near resonanat stimulated Raman-scattering and collisional induced flourescence, especially those aspects associated with quantum noise (due to vacuum fluctuations); (e) the theory of selective reflections spectroscopy; and (f) the effects of laser fluctuations on noise spectroscopy and fur-wave mixing. The experimental program (in collaboration with Dr. A. Gallagher) currently is considering (a) energy pooling reactions, (b) spatial soliton formation and "cone emission" in intense laser light propatation, (c) selective relfection spectropsopy, and (d) effects of velocity changing collisions on spectral line shapes.
 

Selected Publications

• "Quantum Field Theory of Atoms Interacting with Photons I Foundations," M. Lewenstein, L. You, J. Cooper, S.K. Burnett, Phys. Rev. A. 50, 2207 (1994).
• "Quantum Field Theory of Atoms Interacting with Photons II Scattering of Short Laser Pulses in Trapped Bosnic Atoms," L. You, M. Lewenstein, J. Cooper, Phys. Rev. A 51, 4712 (1995).
• "Failures of the Four-wave Missing Model for Cone Emission," R.C. Hart, L. You, A.C. Gallagher, J. Cooper, Opt Commun. 111, 331 (1994).
• "Theory of Selective Reflection Spectroscopy," J. Guo, J. Cooper, A. Gallagher, M. Lewenstein, Opt. Commun. 110, 732 (1994).
• "Line Shapes for Light Scattered from bose-Einstein Condensates," L. You, M. Lewenstein, J. Cooper. Phys. Rev. A 50, R3565 (1994).
• "Light Pressure Force in N-Atom Systems," K. Ellinger, J. Cooper, P. Zoller, Phys. Rev. A 49, 3909 (1994).
• "Saturated Absorption spectroscopy Wave Diode Laser Noise," R. Walserm J. Cooper, P. Zoller, Phys. Rev. A 50, 4303 (1994).

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