Determination of multiphoton absorption of silk fibroin using the Z-scan technique

被引：13

作者：

Applegate, Matthew B. ^{[1
]}

Marelli, Benedetto ^{[1
]}

Kaplan, David L. ^{[1
]}

Omenetto, Fiorenzo G. ^{[1
,2
]}

机构：

[1] Tufts Univ, Dept Biomed Engn, Medford, MA 02155 USA

[2] Tufts Univ, Dept Phys, Medford, MA 02155 USA

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 24期

关键词：

NONLINEAR-OPTICAL PROPERTIES; 3-PHOTON ABSORPTION;

D O I：

10.1364/OE.21.029637

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The multiphoton absorption of silk fibroin at 810 nm was determined by open-aperture Z-scan. Three-photon absorption was confirmed at this wavelength and the three-photon cross section of silk fibroin was measured. Silk fibroin of varying molecular weight was tested and the cross section was found to increase exponentially with increasing molecular weight. The confirmation of a relatively large three-photon absorption cross section in silk will help lay the groundwork for future investigation of direct laser writing of three-dimensional structures within a silk matrix. (C) 2013 Optical Society of America

引用

页码：29637 / 29642

页数：6

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