M. Orszag

Influence of the pumping statistics in lasers and masers

Abstract We derive a master equation which takes into account the statistics of the pump in masers and lasers. We find that in the maser, the photon number noise can be reduced up to 50% below the shot noise limit. In contrast, in the laser case, the maximum reduction is 25%.

Enhanced transient squeezing in the Jaynes-Cummings model with atomic coherence

Abstract We analyze the effects of the injected atomic coherence in the Jaynes-Cummings model. Various conditions for squeezed state generation are studied. Also, for short times, it is possible to distinguish regions where a squeezed state builds up and where it does not.

Dynamically correlated spontaneous-emission laser: theory and comparison with experiment

A higher-order correlated-emission laser (CEL) effect is found theoretically in a Doppler-broadened medium. A full quantum-mechanical account of the CEL in the nonlinear regime shows a large reduction in the beat-signal linewidth. This behavior is confirmed by a recent experiment.

Many-body effects in a quantum free-electron laser model

We study N-body effects on the coherence properties of the light emitted spontaneously by a free-electron laser working in the Compton regime. In particular, antibunching, present in a one-electron model, disappears as soon as one introduces more than one electron into the model. We also study quantum versus classical (shot) noise.

The Correlated Spontaneous Emission Laser: Theory and Recent Developments

As originally conceived a correlated spontaneous emission laser showed quenching of spontaneous emission quantum fluctuations in the relative phase angle of a two mode laser. It has been shown by several approaches (e.g. quantum noise operator, Fokker-Planck equation, etc.) that such devices can, in principle, have vanishing noise in this relative phase angle. A geometric pictorial analysis along these lines has been given and provides a simple intuitive explanation for this quantum noise quenching which has also been supported by recent experimental investigations.