Intrinsically single-mode cavities: towards PT-symmetric surface-emitting lasers
Optics
2015-10-29 v1
Abstract
We explore a new class of Distributed Feedback (DFB) structures that employ the recently-developed concept of Parity-Time (PT) symmetry in optics. We demonstrate that, based on PT-symmetric pure reflective volume gratings, vertical cavity surface-emitting lasers can be constructed. We provide a detailed analysis of the threshold conditions as well as the wavelength and angular spectral characteristics using the Kogelnik coupled-wave approximation, backed up by an exact solution of the Helmholtz equation. We demonstrate that such a PT-symmetric cavity can be configured to support one and only one longitudinal mode, leading to inherently single-mode lasing.
Keywords
Cite
@article{arxiv.1510.08260,
title = {Intrinsically single-mode cavities: towards PT-symmetric surface-emitting lasers},
author = {H. F. Jones and Mykola Kulishov},
journal= {arXiv preprint arXiv:1510.08260},
year = {2015}
}
Comments
4 pages, 3 figures