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

Abstract:

: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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Ma ZC,Chen QD,Han B,Liu XQ,Song JF,Sun HB

doi

10.1038/srep17712

subject

Has Abstract

pub_date

2015-12-11 00:00:00

pages

17712

issn

2045-2322

pii

srep17712

journal_volume

5

pub_type

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