Variation of Two-photon Absorption Cross Sections and Optical Limiting of Compounds Induced by Static Electric Field
Variation of Two-photon Absorption Cross Sections and Optical Limiting of Compounds Induced by Static Electric Field作者机构：College of Physics and Electronics Shandong Normal University Jinan 250014 China
出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)
年 卷 期：2014年第27卷第3期
页 面：259-264页
核心收录：
学科分类：081704[工学-应用化学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金：supported by the 973 Program
主 题：Static electric field Optical limiting Two-photon absorption Organic molecule
摘 要：By numerically solving the Maxwell-Bloch equations using an iterative predictor-corrector finite-difference time-domain technique, we investigate propagating properties of a few-cycle laser pulse in a 4,4＇-bis（di-n-butylamino） stilbene （BDBAS） molecular medium when a static electric field exists. Dynamical two-photon absorption （TPA） cross sections are obtained and optical limiting （OL） behavior is displayed. The results show that when the static electric field intensity increases, the dynamical TPA cross section is enhanced and the OL behavior is improved. Moreover, both even- and odd-order harmonic spectral components are generated with existence of the static electric field because it breaks the inversion symmetry of the BDBAS molecule. This work provides a method to modulate the nonlinear optical properties of the BDBAS compounds.
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