Work

Lasing versus lasing without inversion in an optically thin gain medium near a metal surface

Year: 2022

Type: article

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 the close vicinity of a reflective surface, which provides 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 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.

Source: Journal of the Optical Society of America B

DOI: 10.1364/josab.462562

Author: V. G. Bordo

Institution: University of Southern Denmark

Language: English

Topic: Plasmonic and Surface Plasmon Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funder: European Social Fund

Award: G1348782753