Optical trapping forces of focused circular partially coherent beams on Rayleigh particles

• Autorzy: Yu Chaoqun , Chen Fuchang , Zeng Jun , Huang Cheng , He Zhimin , Lin Huichuan , Zhang Yongtao , Chen Ziyang , Pu Jixiong

Identyfikatory

DOI

10.37190/oa220408

• Języki publikacji: EN

Abstrakty

EN

The optical trapping forces of tightly-focused radially polarized circular partially coherent beams on Rayleigh particles are theoretically investigated. Numerical calculations are performed to study the optical trapping forces on Rayleigh particles for different initial coherent length of the incident circular partially coherent beams. The results show that the magnitude of the gradient force decreases with the reduction of the initial coherent length of the focused radially polarized circular partially coherent beams, while the balanced position (i.e., the position where the optical trapping forces becomes zero) stays constant. Moreover, the focused spot gradually elongates along the optical axis with the reduction of the initial coherent length, and the axial gradient force on Rayleigh particles also decreases gradually with the reduction of the intensity gradient in axial direction. As there exists an spherical aberrant in the focusing optical system, the focal spot in the direction of the optical axis becomes trumpet-shaped, and the optical trapping forces on Rayleigh particles change as well.

Słowa kluczowe

EN

tight focusing; radially polarized; circular partially coherent; spherical aberration; optical trapping force

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2022
• Tom: Vol. 52, nr 4
• Strony: 575--583
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Yu Chaoqun

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

Chen Fuchang

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

Zeng Jun

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

Huang Cheng

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

He Zhimin

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

Lin Huichuan

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

Zhang Yongtao

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China

autor

Chen Ziyang

• Fujian Provincial Key Laboratory of Light Propagation and Transformation, College of Information Science & Engineering, Huaqiao University, Xiamen 361021, China

autor

Pu Jixiong

• College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China
• Fujian Provincial Key Laboratory of Light Propagation and Transformation, College of Information Science & Engineering, Huaqiao University, Xiamen 361021, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).