Topological cascade laser for frequency comb generation in $\mathcal{PT}$-symmetric structures
Optics
2018-02-14 v1
Abstract
The cascade of resonant topological structures with -symmetry breaking is shown to emit laser light with a frequency-comb spectrum. We consider optically active topological Aubry-Andr\'e-Harper lattices supporting edge-modes at regularly spaced frequencies. When the amplified resonances in the -broken regime match the edge modes of the topological gratings, we predict the emission of discrete laser lines. A proper design enables to engineer the spectral features for specific applications. The robustness of the topological protection makes the system very well suited for a novel generation of compact frequency comb emitters for spectroscopy, metrology, and quantum information.
Cite
@article{arxiv.1707.09191,
title = {Topological cascade laser for frequency comb generation in $\mathcal{PT}$-symmetric structures},
author = {Laura Pilozzi and Claudio Conti},
journal= {arXiv preprint arXiv:1707.09191},
year = {2018}
}
Comments
6 pages, 6 figures