Optical limiting and dynamical two-photon absorption for femtosecond laser pulses in BDBAS

被引：4

作者：

Zhang, Yu-Jin ^{[1
]}

Zhou, Yong ^{[1
]}

Ma, Jun-Yang ^{[1
]}

Chen, Yao ^{[1
]}

Wang, Chuan-Kui ^{[1
]}

机构：

[1] Shandong Normal Univ, Coll Phys & Elect, Jinan 250014, Peoples R China

来源：

JOURNAL OF ATOMIC AND MOLECULAR SCIENCES | 2014年 / 5卷 / 03期

关键词：

optical limiting; two-photon absorption; organic molecule;

D O I：

10.4208/jams.032714.062614a

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

By numerically solving the Maxwell-Bloch equations using an iterative predictor-corrector finite-difference time-domain (FDTD) technique, the optical limiting (OL) and two-photon absorption (TPA) properties for femtosecond laser pulses in a strong TPA organic molecular (4,4'-bis (di-n-butylamino) stilbene (BDBAS)) medium are studied. The medium has obvious OL behavior in a certain intensity region which is dependent on the propagation distance, sample concentration, input pulse width and effect of optical ionization. Moreover, dynamical TPA cross sections are obtained, showing an increasing trend with the broadening of the pulse width and the propagation distance in the femtosecond time domain.

引用

页码：254 / 262

页数：9

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