3-dimensional dark traps for low refractive index bio-cells using a single optical fiber Bessel beam

Yu Zhang, Xiaoyun Tang, Yaxun Zhang, Wenjie Su, Zhihai Liu, Xinghua Yang, Jianzhong Zhang, Jun Yang, Kyunghwan Oh, Libo Yuan

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We proposed and experimentally demonstrated 3-dimensional dark traps for low refractive index bio-cells using a single optical fiber Bessel beam. The Bessel beam was produced by concatenating single-mode fiber and a step indexmultimode fiber, which was then focused by a high refractive index glass microsphere integrated on the fiber end facet. The focused Bessel beam provided two dark fields along the axial direction, where stable trapping of low refractive index bio-cells was realized in a high refractive index liquid bath. The all-fiber and seamlessly integrated structure of the proposed scheme can find ample potential as a micro-optical probe in in situ characterization and manipulation of multiple bio-cells with refractive indices lower than that of the liquid bath.

Original languageEnglish
Pages (from-to)2784-2786
Number of pages3
JournalOptics Letters
Volume43
Issue number12
DOIs
Publication statusPublished - 2018 Jun 15

Bibliographical note

Funding Information:
Funding. National Natural Science Foundation of China (NSFC) (61675053, 61775047, 61705051); 111 Project (B13015); Fundamental Research Funds for Harbin Engineering University of China.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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