Please use this identifier to cite or link to this item:
Title: Nonlinear optical properties of 2,4,5-Trimethoxy-4′-nitrochalcone: Observation of two-photon-induced excited-state nonlinearities
Authors: Gu, B. 
Ji, W. 
Huang, X.-Q.
Patil, P.S.
Dharmaprakash, S.M.
Issue Date: 19-Jan-2009
Citation: Gu, B., Ji, W., Huang, X.-Q., Patil, P.S., Dharmaprakash, S.M. (2009-01-19). Nonlinear optical properties of 2,4,5-Trimethoxy-4′-nitrochalcone: Observation of two-photon-induced excited-state nonlinearities. Optics Express 17 (2) : 1126-1135. ScholarBank@NUS Repository.
Abstract: We report experimental investigations of optical nonlinearities and nonlinear dynamics in acetone solution of 2,4,5-Trimethoxy-4′- nitrochalcone. By performing Z-scans with femtosecond laser pulses at low excitation intensity, two-photon absorption (2PA) and third-order nonlinear refraction are measured. As laser excitation intensity exceeds a critical value, however, the interplay between third- and fifth-order nonlinearities is observed. It is also confirmed that fifth-order processes mainly originate from 2PA-induced excited-state nonlinearities by conducting femtosecond time-resolved degenerate pump-probe measurements. All the nonlinear parameters are determined unambiguously in the near infrared region of the 2PA cross-section, second-order hyperpolarizability, excited-state absorption cross-section, excited-state refraction cross-section, lifetime of excited states induced by 2PA, and critical population of the excited states in 2,4,5-Trimethoxy-4′- mtrochalcone molecule. © 2008 Optical Society of America.
Source Title: Optics Express
ISSN: 10944087
DOI: 10.1364/OE.17.001126
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 14, 2019


checked on Jan 14, 2019

Page view(s)

checked on Dec 28, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.