Measurement of Two-Photon Absorption Cross Section of Metal Ions by a Mass Sedimentation Approach

被引：13
作者：
Ma, Zhuo-Chen [1 ]
Chen, Qi-Dai [1 ]
Han, Bing [1 ]
Liu, Xue-Qing [1 ]
Song, Jun-Feng [1 ]
Sun, Hong-Bo [1 ,2 ]
机构：
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
[2] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China
来源：
SCIENTIFIC REPORTS | 2015年 / 5卷
基金：
中国国家自然科学基金;
关键词：
OPTICAL-DATA STORAGE; PHOTOCHEMICAL FORMATION; QUANTUM DOTS; POLYMERIZATION; SILVER; FLUORESCENCE; INITIATORS; EXCITATION;
D O I：
10.1038/srep17712
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The photo-reduction of metal ions in solution induced by femtosecond laser is an important and novel method for fabricating three-dimensional metal microstructures. However, the nonlinear absorption cross section of metal ions remains unknown because its measurement is difficult. In the present study, a method based on Two-Photon Excited Sedimentation (TPES) is proposed to measure the two-photon absorption cross section (TPACS) of metal ions in solution. The power-squared dependence of the amount of sediment on the excitation intensity was confirmed, revealing that 800 nm femtosecond laser induced reduction of metal ions was a two photon absorption process. We believe that the proposed method may be applied to measure the TPACS of several metal ions, thereby opening a new avenue towards future analysis of two-photon absorption materials.
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页数：8
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