Comment on 'Counterintuitive Dispersion Violating Kramers-Kronig Relations in Gain Slabs'
Other Condensed Matter
2015-11-30 v2
Abstract
In this Comment, we refute conclusions made in Phys. Rev. Lett. 112, 233601 (2014) by L.-G. Wang, L. Wang, M. Al-Amri, S.-Y. Zhu, and M. S. Zubairy. These conclusions stem from the use of the linear theory, which is not applicable to systems having poles of the reflection and transmission coefficients in the upper half of the complex frequency plane.
Keywords
Cite
@article{arxiv.1407.5549,
title = {Comment on 'Counterintuitive Dispersion Violating Kramers-Kronig Relations in Gain Slabs'},
author = {D. G. Baranov and A. A. Zyablovsky and A. V. Dorofeenko and A. P. Vinogradov and A. A. Lisyansky},
journal= {arXiv preprint arXiv:1407.5549},
year = {2015}
}