Lasing versus lasing without inversion in an optically thin gain medium near a metal surface
Optics
2022-08-15 v2 Mesoscale and Nanoscale Physics
Quantum Physics
Abstract
A theory of lasing in an optically thin layer of active centers disposed at a metal surface is developed from first principles. The approach is based on a rigorous account of the local field in a close vicinity of a reflective surface which provides a feedback for dipole oscillations in active centers. It is demonstrated that the gain medium thickness plays a crucial role in the lasing condition and controls a switching from conventional lasing to lasing without inversion. The numerical calculations are carried out for erbium doped glass bordering a gold surface where radiation at telecom wavelength (1532 nm) can be generated.
Cite
@article{arxiv.2203.06452,
title = {Lasing versus lasing without inversion in an optically thin gain medium near a metal surface},
author = {V. G. Bordo},
journal= {arXiv preprint arXiv:2203.06452},
year = {2022}
}
Comments
9 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:2111.11746