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Full-Text Articles in Physics
Active-Coupling Mixing Times For A Stirred Binary Liquid, Nalini Easwar, James V. Maher, D. J. Pine, W. I. Goldburg
Active-Coupling Mixing Times For A Stirred Binary Liquid, Nalini Easwar, James V. Maher, D. J. Pine, W. I. Goldburg
Physics: Faculty Publications
Mixing times measured for a stirred critical binary liquid mixture are seen to vary dramatically with Reynolds number, Prandtl number, and the initial value of the order parameter. These variations are far too large to be explained by passive-mixing calculations; they also differ in significant respects from the active-mixing predictions of Ruiz and Nelson.
Observation Of Biexcitonic Optical Bistability And Optical Limiting In Cucl, N. Peyghambarian, H. M. Gibbs, M. C. Rushford, D. A. Weinberger
Observation Of Biexcitonic Optical Bistability And Optical Limiting In Cucl, N. Peyghambarian, H. M. Gibbs, M. C. Rushford, D. A. Weinberger
Physics: Faculty Publications
Experimental evidence for the occurrence of optical bistability using the biexciton two-photon resonance in CuCl is presented. These observations agree with recent theoretical predictions that require an intensity of 10 MW/cm2 and 10-μm-thick etalons with 90% reflective coatings. Earlier much less demanding predictions neglected two important physical effects: unsaturable background absorption at the biexciton from the tail of the exciton resonance and broadening of the biexciton resonance with intensity.