A new method for directly obtaining the normally ordered form of single-and two-mode squeeze operators is presented. This method is based on the technique of "integration within an ordered product." The operator expressions are derived using the coherent-state representation as well as the coordinate and the momentum representations. The method is very simple, and the approach has an intuitive basis that makes the squeezing property manifest at the outset.
The frequency spectrum of the resonant scattering cross section is calculated from a boundary value solution of Maxwell's equation. The spectral width of the cross section gives the coherent radiation damping rate for the resonant medium. For a large sphere, the coherent width is found to be proportional to the radius, and is much larger than the collision and the Doppler widths in a gas. It is proposed that this effect may also be observable in some absorption experiments.
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