Phase sensitivity by fast light propagation using compton scattering and Kerr non-linearity

Akbar, J., Bin, X., Hou, L. , Marsh, J. H. and Liu, X. (2022) Phase sensitivity by fast light propagation using compton scattering and Kerr non-linearity. Optical and Quantum Electronics, 55, 129. (doi: 10.1007/s11082-022-04334-y)

Abstract

We theoretically investigated the sub-luminal and super-luminal light propagation by introducing compton scattering and Kerr non-linear effects to a four level atomic system. Slow light propagation is observed at a group index of 3918 in the transparency region. The slow light propagation is tuned to fast light propagation at group index 0.2, using compton scattering angle of φ=π/6. The surperluminality is further enhanced with compton scattering angle at the resonance frequency. Under the Kerr nonlinearity, the slow light propagation at a group index of 3918 is enhanced to fast light propagation at group index of 2×106 at the resonance frequency. The group index is reduced to 6.56281×10−5 in the presence of both Kerr non-linearity and compton scattering. In the presence of compton scattering, the Phase shift at π/2 without Kerr nonlinearity is 7×10−8 radian and with Kerr nonlinearity its value is 1.7×10−9 radian at resonance frequency. This demonstrate that introducing Kerr effect and compton scattering lead to significant modifications in the phase shift.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Marsh, Professor John and Akbar, Mr Jehan and Hou, Dr Lianping
• Authors: Akbar, J., Bin, X., Hou, L., Marsh, J. H., and Liu, X.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Optical and Quantum Electronics
• Publisher: Springer
• ISSN: 0306-8919
• ISSN (Online): 1572-817X
• Copyright Holders: Copyright © The Author(s) 2022
• First Published: First published in Optical and Quantum Electronics 55: 129
• Publisher Policy: Reproduced under a Creative Commons License