| Title | Optimizing the second-order nonlinear optical response in some indoline based chromophores at the molecular and macroscopic levels |
| Publication Type | Conference Paper |
| Year of Publication | 2011 |
| Authors | Teshome, A., Bhuiyan M.D.H., Ashraf M., Gainsford G.J., Kay A.J., Van Cleuvenbergen S., Asselberghs I., and Clays K. |
| Conference Name | Proceedings of SPIE - The International Society for Optical Engineering |
| Date Published | 2011 |
| Keywords | Azo dyes, Chromophores, Corona poling, Dipolar chromophores, Hyper Rayleigh scattering, Hyper-polarizability, Nonlinear optics, Polymer films, Rayleigh scattering, Second order nonlinear optics |
| Abstract | The effect of extending the conjugation length, the deployment of various substituents and configurational locking of the polyene backbone on the second-order nonlinear optical (NLO) response of a series of indoline based compounds has been investigated. The compounds were examined using Hyper-Rayleigh scattering (HRS) and relative second-harmonic generation (SHG) techniques with a femtosecond operating system with a 1300 nm fundamental wavelength. All of the compounds were found to have high molecular hyperpolarizabilities with β values of up to 1230 × 10-30 esu. At the macroscopic level - for poled polymer thin films - a strong second-order NLO signal has been detected and d33 values of up to 217 pm/V are found - a response of some ten times greater than that found for the well known azo dye Disperse Red 1. © 2011 SPIE. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-80053482797&partnerID=40&md5=c68699889712b1bd8fcc6d5fdcf0c1f6 |
| DOI | 10.1117/12.892312 |
