Abstract
We show that the quantum-limited linewidth of a laser can be enhanced when the polarization eigenmodes of the laser resonator are nonorthogonal. For the theoretical description of this phenomenon we introduce a simple coupled two-mode model. Experimentally, we observed an enhancement of the quantum noise by a factor of 60 in a He-Xe gas laser.
- Received 7 August 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.4357
©1997 American Physical Society
