Saturable absorption and reverse saturable absorption in platinum nanoparticles

被引：271

作者：

Gao, YC ^{[1
]}

Zhang, XR

Li, YL

Liu, HF

Wang, YX

Chang, Q

Jiao, WY

Song, YL

机构：

[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China

[3] Heilongjiang Univ, Coll Elect Engn, Harbin 150080, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2005年 / 251卷 / 4-6期

基金：

中国国家自然科学基金;

关键词：

nonlinear absorption; saturable absorption; reverse saturable absorption; nanoparticle; Z-scan;

D O I：

10.1016/j.optcom.2005.03.003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The optical nonlinear absorption of the aqueous solution of platinum nanospheres protected by poly (N-vinyl-2-pyrrolidone) was investigated using open aperture Z-scan method with nanosecond pulse laser at the wavelength of 532 run. A shift from saturable absorption to reverse saturable absorption was observed at higher input pump intensities. The transition process was analyzed using a phenomenological model based on nonlinear absorption coefficient and saturation intensity. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：429 / 433

页数：5

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