Ultrafast time-resolved fluorescence by two photon absorption excitation

被引：29
|
作者：
Kim, Chul Hoon [1 ]
Joo, Taiha [1 ]
机构：
[1] Pohang Univ Sci & Technol, Dept Chem, Pohang, South Korea
来源：
OPTICS EXPRESS | 2008年 / 16卷 / 25期
关键词：
D O I：
10.1364/OE.16.020742
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a time-resolved fluorescence apparatus utilizing fluorescence upconversion by noncollinear sum frequency generation and two photon absorption as an excitation. Near perfect time-resolution is achieved with 20 fs pulses to give the instrument response of 33 fs (FWHM) over the entire fluorescence wavelength for a 100 mu m thick mixing crystal. Through experiments and numerical simulations, it is shown that 40 fs time-resolution can be obtained even for a 580 mu m thick mixing crystal at a fluorescence wavelength longer than 500 nm. (C) 2008 Optical Society of America
引用
收藏
页码：20742 / 20747
页数：6
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