Theoretical prediction of three-dimensional shifting of a spherical focal spot in a 4Pi focusing system

Autor(en)

Ze Li, Shaohui Yan, B Yao, Ming Lei, Baiheng Ma, Peng Gao, Dan Dan, Romano Rupp

Abstrakt

A spherical focal spot can be generated by focusing radially polarized laser beams in a 4Pi focusing system, which will result in an increase in axial resolution in microscopy or higher axial trapping efficiency. We demonstrate the possibility of continuous shifting of the spherical focal spot along the prescribed trajectory in three-dimensional space by suitably modulating the phase of the input fields at the pupil planes of the microscope objective lenses. This may provide an alternative to moving trapped particles or scanning a specimen without moving either laser beams or the stage

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Chinese Academy of Sciences (CAS), University of the Chinese Academy of Sciences

Journal

Journal of Optics A: Pure and Applied Optics (Print Edition)

Band

14

Anzahl der Seiten

5

ISSN

1464-4258

DOI

https://doi.org/10.1088/2040-8978/14/5/055706

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/611c1771-e709-4702-a920-464e1ef195c7