Quantitative deviation of the two-photon absorption coefficient based on three laser pulse models

被引：2

作者：

Zhao, Peide ^{[1
]}

Zhang, Yong ^{[1
]}

Bao, Wenxia ^{[1
]}

Zhang, Zhongya ^{[1
]}

Wang, Dayun ^{[1
]}

Liu, Ming ^{[1
]}

Zhang, Zhidong ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Sci, Tianjin 300130, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2010年 / 8卷 / 01期

关键词：

OPTICAL-DATA STORAGE; CROSS-SECTIONS; EXCITATION; MOLECULES;

D O I：

10.3788/COL20100801.0093

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The pulse profile influence of excitation light on the two-photon absorption coefficient beta is theoretically and numerically studied. Based on Gaussian spatial and temporal laser, we obtain an expansion formula of energy transmission. As compared with a plain beam and a pulse beam that is rectangular in time but Gaussian in space, the relative deviations of beta turn out to be about 214% and 47%, respectively. These differences indicate that a smaller beta may be obtained than the real one in usual nonlinear transmission. Our result suggests that by taking real pulse profile into account, a more exact beta can be derived in energy transmission measurement.

引用

页码：93 / 98

页数：6

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