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
收藏
页码：93 / 98
页数：6
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