Optical rotation conveyor belt based on a polarization-maintaining hollow-core photonic crystal fiber
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Optical rotation conveyor belt based on a polarization‑maintaining hollow‑core photonic crystal fiber Heming Su1 · Nan Li1 · Chenge Wang1 · Qi Zhu1 · Wenqiang Li1 · Zhenhai Fu2 · Huizhu Hu1,2 Received: 28 May 2020 / Accepted: 6 October 2020 © The Optical Society of Japan 2020
Abstract Hollow-core photonic crystal fibers (HCPCFs), a form of optical conveyer belts, have been used to guide particles for many years. However, only the translational motions of a guided particle can be manipulated. In contrast to traditional types, we demonstrate a new form of optical conveyor belts based on a polarization-maintaining hollow-core photonic crystal fiber (PMHCPCF). Because of the constant polarization state in the PMHCPCF, both the translational and rotational motions of a guided particle can be manipulated simultaneously. For the convenience of theoretical simulations and the effortless control of the polarization state in the PMHCPCF, an x-axis linearly polarized beam and an elliptically polarized beam are coupled into the PMHCPCF to form an incoherent dual-beam trap. For a specific guided particle, the orientation of the particle can be manipulated by the polarization state of the x-axis linearly polarized beam and its rotation rate can be manipulated by the polarization state of the elliptically polarized beam. Moreover, we can obtain any orientation and rotation rate at each trapping position by changing the polarization direction and polarization state. This results in a variety of application prospects in the study of chiral molecules, especially in the fields of biology, medicine, chemistry, and polymers. Keywords Polarization-maintaining hollow-core photonic crystal fiber (PMHCPCF) · Optical rotation conveyor belts · Optical angular momentum transfer · Chiral molecules
1 Introduction Hollow-core photonic crystal fibers (HCPCFs), which have been used in optical conveyor belts for years [1–6], provide not only a versatile tool for optical micro-manipulation [7] and motion detection of trapped particles [8], but also a precise measurement tool for force [9], external temperature [10], gas or liquid viscosity [11], and so on. With the development of optical traps and detection systems [12–16], more and more technologies are integrated into optical conveyor belts, such as three-dimensional motion detection of a particle center of mass [17]. However, only translational motions can be controlled to date. This restricts its applications in the
* Huizhu Hu [email protected] 1
State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
Quantum Sensing Center, Zhejiang Lab, Hangzhou 310000, Zhejiang, China
2
study of chiral molecules, which is important in the fields of biology, medicine, chemistry, and polymers. Based on the characteristics of polarization-maintaining photonic crystal fibers (PMHCPCFs), we demonstrate a new form of optical conveyor belts with control of translational and rotationa
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