Quantum-limited linewidth of a chaotic laser cavity
chao-dyn
2007-05-23 v2 Mesoscale and Nanoscale Physics
Chaotic Dynamics
Quantum Physics
Abstract
A random-matrix theory is presented for the linewidth of a laser cavity in which the radiation is scattered chaotically. The linewidth is enhanced above the Schawlow-Townes value by the Petermann factor K, due to the non-orthogonality of the cavity modes. The factor K is expressed in terms of a non-Hermitian random matrix and its distribution is calculated exactly for the case that the cavity is coupled to the outside via a small opening. The average of K is found to depend non-analytically on the area of the opening, and to greatly exceed the most probable value.
Keywords
Cite
@article{arxiv.chao-dyn/9905019,
title = {Quantum-limited linewidth of a chaotic laser cavity},
author = {M. Patra and H. Schomerus and C. W. J. Beenakker},
journal= {arXiv preprint arXiv:chao-dyn/9905019},
year = {2007}
}
Comments
4 pages, 2 figures; corrected an error in Fig. 1