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
收藏
页码：291 / 295
页数：5
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