Microparticle optical trapping of silica gel by Au-NP Q-switched fiber laser pulses

被引：5

作者：

Mahmud, N. N. H. E. N. ^{[1
]}

Awang, N. A. ^{[1
]}

Zulkefli, N. U. H. H. ^{[1
]}

Hanafiah, F. N. M. ^{[1
]}

机构：

[1] Univ Tun Hussein Onn Malaysia, Fac Appl Sci & Technol, Devices & Sensor Res Ctr PDSR, Dept Phys & Chem,Pagoh Educ Hub, Pagoh 84600, Johor, Malaysia

来源：

OPTICS AND LASERS IN ENGINEERING | 2023年 / 168卷

关键词：

Gold nanoparticle; Microparticle optical trapping; Optical force; Q-switched fiber laser; MANIPULATION; LEVITATION; BEAM; PARTICLE; FORCE; CELLS; RESONANCE; REVERSAL; BINDING; SPHERE;

D O I：

10.1016/j.optlaseng.2023.107669

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This study demonstrates a method for microparticle optical trapping of silica gel using a stable Q-switched fiber laser (QFL) pulse. Gold nanoparticle (Au-NP) were fabricated as saturable absorbers on a side-polished optical fiber (SPF) to achieve stable QFL pulses of frequencies 25.81 kHz. Silica gel microparticles with a radius of 300-400 mu m produced a dissimilar attractive trapping force based on the viscous drag exerted on the light field of the QFL. Shifts were observed at wavelengths of 1533.8-1541.0 nm and frequencies of 25.81-28.87 kHz. The validity of the numerical model is proven and the proposed model can be applied to examine the behavior of surface plasmon polaritons (SPP) modes in microparticle optical trapping. These findings confirm that the proposed system facilitates absorption microparticle trapping at the 1540 nm wavelength region.

引用

页数：9

共 51 条

[1] The investigation of molten pool dynamic behaviors during the "∞" shaped oscillating laser welding of aluminum alloy [J].