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Miniaturized Dual-Beam Optical Trap Based on Fiber Pigtailed Focuser.

Authors :
Xiang, Qianyi
Li, Nan
Chen, Xingfan
Liu, Cheng
Hu, Huizhu
Source :
Photonics; Sep2023, Vol. 10 Issue 9, p1007, 11p
Publication Year :
2023

Abstract

Optical traps, utilizing a laser to confine and manipulate microscopic particles, are widely employed in various scientific applications. We propose a miniaturized dual-beam fiber optical trap for acceleration sensing. It comprises two counter-propagating beams' output from a customized pair of single-mode fiber pigtailed focusers (SMFPF). We investigate the correlation between the misalignment and the coupling efficiency of the SMFPF pair. By maximizing the coupling efficiency, the optimal alignment is achieved. A multimode fiber (MMF) is introduced to collect and transmit side-scattered light of a trapped microsphere for motion detection. By analyzing the experimental output signal, we acquire displacement information of the trapped microspheres under both aligned and misaligned conditions. This paper provides a simple and practical solution for the alignment of dual beams and the integration of the optical traps' levitation and detection structure, which lay a solid foundation for the further miniaturization of dual-beam optical traps. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
23046732
Volume :
10
Issue :
9
Database :
Complementary Index
Journal :
Photonics
Publication Type :
Academic Journal
Accession number :
172414647
Full Text :
https://doi.org/10.3390/photonics10091007