Next Article in Journal
Inspection of Piezoceramic Transducers Used for Structural Health Monitoring
Next Article in Special Issue
Graphene Oxide: A Perfect Material for Spatial Light Modulation Based on Plasma Channels
Previous Article in Journal
Novel AlN/Pt/ZnO Electrode for High Temperature SAW Sensors
Previous Article in Special Issue
A Filmy Black-Phosphorus Polyimide Saturable Absorber for Q-Switched Operation in an Erbium-Doped Fiber Laser
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Materials 2017, 10(1), 70; doi:10.3390/ma10010070

Conjugation Length Effect on TPA-Based Optical Limiting Performance of a Series of Ladder-Type Chromophores

1,†
,
2,†
,
1
,
1,* and 3,*
1
School of Science, Qilu University of Technology, Jinan 250353, China
2
Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
3
School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editors: Alessandro Salandrino and Qing-Hua Xu
Received: 20 October 2016 / Revised: 11 January 2017 / Accepted: 12 January 2017 / Published: 16 January 2017
(This article belongs to the Special Issue Nonlinear Optical Material)
View Full-Text   |   Download PDF [2345 KB, uploaded 16 January 2017]   |  

Abstract

Nonlinear optical properties of a series of newly-synthesized ladder-type chromophores containing oligo-p-phenylene moiety with different π-conjugated lengths were theoretically studied by numerically solving the rate equations and the field intensity equation with an iterative predictor-corrector finite-difference time-domain technique. Ab initio calculation results show that the compounds can be described by the three-level model. Based on the two-photon absorption mechanism, highly efficient optical limiting performances are demonstrated in the chromophores, which strongly depend on the π-conjugated length of the molecule. Special attention has been paid to the dynamical two-photon absorption, indicating that the parameter of the medium can affect the dynamical two-photon absorption cross section. Our numerical results agree well with the experimental measurements. It reveals that the increase in the π-conjugated length of ladder-type oligo-p-phenylene for these chromophores leads to enhanced nonlinear optical absorption. The results also provide a method to modulate the optical limiting and dynamical two-photon absorption of the compounds by changing the molecular density and thickness of the absorber. View Full-Text
Keywords: two-photon absorption; optical limiting; rate equations-field intensity equation two-photon absorption; optical limiting; rate equations-field intensity equation
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zhang, Y.; Hu, W.; Zhao, L.; Leng, J.; Ma, H. Conjugation Length Effect on TPA-Based Optical Limiting Performance of a Series of Ladder-Type Chromophores. Materials 2017, 10, 70.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top