Counterintuitive Dispersion Violating Kramers-Kronig Relations in Gain Slabs

Li-Gang Wang, Lin Wang, M. Al-Amri, Shi-Yao Zhu, and M. Suhail Zubairy

Phys. Rev. Lett. 112, 233601 – Published 11 June 2014

Abstract

We demonstrate the counterintuitive dispersion effect that the peaks (dips) in the gain spectrum correspond to abnormal (normal) dispersion, contrary to the usual Kramers-Kronig point of view. This effect may also lead to two unique features: a broadband abnormal dispersion region and an observable Hartman effect. These results are explained in terms of interference and boundary effects. Finally, two experiments are proposed for the potential experimental verification.

Received 25 February 2014

DOI:https://doi.org/10.1103/PhysRevLett.112.233601

Authors & Affiliations

Li-Gang Wang^1,2,3,*, Lin Wang^1,4, M. Al-Amri^2,3,4, Shi-Yao Zhu^4,5, and M. Suhail Zubairy^2,3,4

¹Department of Physics, Zhejiang University, Hangzhou 310027, China
²Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, USA
³The National Center for Applied Physics, KACST, P. O. Box 6086, Riyadh 11442, Saudi Arabia
⁴Beijing Computational Science Research Center, Beijing 100084, China
⁵Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China

^*lgwang@physics.tamu.edu; sxwlg@yahoo.com

Comments & Replies

Comment on “Counterintuitive Dispersion Violating Kramers-Kronig Relations in Gain Slabs”

D. G. Baranov, A. A. Zyablovsky, A. V. Dorofeenko, A. P. Vinogradov, and A. A. Lisyansky

Phys. Rev. Lett. 114, 089301 (2015)

Wang et al. Reply

Li-Gang Wang, Lin Wang, M. Al-Amri, Shi-Yao Zhu, and M. Suhail Zubairy

Phys. Rev. Lett. 114, 089302 (2015)

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Vol. 112, Iss. 23 — 13 June 2014

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