Femtosecond laser trapping dynamics of two-photon absorbing hollow-core nanoparticles

• 作者: Bing Gu Guanghao Rui Jun He Liping Gong Xiaohe Zhang Yiping Cui Zhuqing Zhu
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2020,（8）
• 所属期刊栏目: Nonlinear Optics
• 页码范围: 59-64
• 页数: 6页
• 语种: 英文
• DOI: 10.3788/COL202018.081901

摘要

We investigate femtosecond laser trapping dynamics of two-photon absorbing hollow-core nanoparticles with different volume fractions and two-photon absorption (TPA) coefficients.Numerical simulations show that the hollow-core particles with low and high-volume fractions can easily be trapped and bounced by the tightly focused Gaussian laser pulses,respectively.Further studies show that the hollow-core particles with and without TPA can be identified,because the TPA effect enhances the radiation force,and subsequently the longitudinal force destabilizes the trap by pushing the particle away from the focal point.The results may find direct applications in particle sorting and characterizing the TPA coefficient of single nanoparticles.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Liping Gong		1	0	0.0	0.0
2	Xiaohe Zhang		1	0	0.0	0.0
3	Zhuqing Zhu		1	0	0.0	0.0
4	Guanghao Rui		1	0	0.0	0.0
5	Jun He		1	0	0.0	0.0
6	Yiping Cui		1	0	0.0	0.0
7	Bing Gu		1	0	0.0	0.0