This article has an erratum: [https://doi.org/10.1209/epl/i2006-10337-8]
Volume 75, Number 3, August 2006
|Page(s)||468 - 474|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||30 June 2006|
Giant ground- and excited-state optical nonlinearity in one-dimensional cuprates
Laser Physics Application section, Raja Ramanna Centre for Advanced Technology Indore 452013, India
Accepted: 9 June 2006
We present a mechanism of giant optical nonlinearity in one-dimensional Mott-Hubbard insulators and predict a few orders of magnitude higher excited-state optical non-linearity compared to that from the ground state. We show that not only the first excited one- and two-photon states are nearly degenerate but also higher-energy excited one- and two-photon states with very large dipole coupling between them are so. This is the cause for huge optical nonlinearity and higher excited-state optical nonlinearity. We also predict the presence of a higher-energy two-photon state through various optical properties to be experimentally verified. The gigantic excited-state optical nonlinearity predicted for Mott-Hubbard insulators, perhaps, may make these systems suitable for application in terahertz sources.
PACS: 71.27.+a – Strongly correlated electron systems; heavy fermions / 78.20.Bh – Optical properties of bulk materials and thin films: Theory, models, and numerical simulation / 42.65.-k – Nonlinear optics
© EDP Sciences, 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.