Studies of nonlinear optical properties of PicoGreen dye using Z-scan technique

被引：40

作者：

Pradeep, C. ^{[1
]}

Mathew, S. ^{[1
]}

Nithyaja, B. ^{[1
]}

Radhakrishnan, P. ^{[1
]}

Nampoori, V. P. N. ^{[1
]}

机构：

[1] Cochin Univ Sci & Technol, Int Sch Photon, Cochin 682022, Kerala, India

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2014年 / 115卷 / 01期

关键词：

DOUBLE-STRANDED DNA; 2-PHOTON ABSORPTION; LASER-PULSES; SINGLE-BEAM; REFRACTION; INDEX; ASSAY;

D O I：

10.1007/s00339-013-7814-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper we study the nonlinear optical properties of PicoGreen dye. The investigations involve the single-beam Z-scan technique and measurements were carried out at different incident intensities. Both open and closed aperture Z-scan techniques were performed at 532 nm and it was found that the dye exhibited a reverse saturable absorption with significant nonlinear absorption coefficient and intensity-dependent negative nonlinear refraction coefficient, indicating self-defocusing phenomena. The third-order nonlinear susceptibility and optical limiting threshold were also measured.

引用

页码：291 / 295

页数：5

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