Quantum Theory of the Laser Revisited: An “Exact” Calculation of the off-Diagonal Elements, ρnm
In the quantum theory of laser due to Scully and Lamb , the calculation of the off-diagonal elements of the reduced density matrix for the field ρnm was based upon the ansatz that pnm, for m−n ≡ K of order 1, could be obtained from the diagonal elements of the density matrix by using the following prescription.
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- 2.M. Sargent, III, M. 0. Scully, and W. E. Lamb, Jr., Laser Physics ( Addison-Wesley, Reading, Mass., 1974 ), P. 292.Google Scholar