Superresolution imaging with focused radially polarized beam

Focused radially polarized beam is used to image non-fluorescent specimens to enhance the spatial resolution of conventional confocal microscopes.


Summary

With pupil engineering of the common radially polarized illumination, a more tight focal spot can be obtained. Combining this character with a confocal laser scanning system, we can demonstrate both numerically and experimentally that this condition can offer spatial resolution improvements for imaging.


Research description

Rigorous vectorial focusing theory is presented in this paper for imaging small
particles next to each otherwith a confocal laser scanning system.We consider radially polarized illumination with an optimized amplitude distribution and an annular lens to obtain a narrower spot size of the longitudinal component of the field in focus.

A polarization convertor at the detector side is added to transform radial polarization to linear polarization in order to make the signal detectable with a single mode fiber.


Keywords

Projects.

View all on the projectspage.

Optimization for complex optical system

Aberration retrieval and spatial coherence property measurement for imaging system ...

project

Optimization for complex optical system

Superresolution imaging with focused radially polarized beam

Focused radially polarized beam is used to image non-fluorescent specimens to enhance the spatial resolution of conventional confocal microscopes. ...

project

Superresolution imaging with focused radially polarized beam

Application of hyperbolic meta-materials

What is the ideal optical material for imaging? ...

project

Application of hyperbolic meta-materials

Phase Retrieval Imaging

Ptychography with partially coherent illumination ...

project

Phase Retrieval Imaging

Influence of the mechanical Environment on Optical Fiber based Sensor

Understanding possible limitation of some fiber optic sensor technologies ...

project

Influence of the mechanical Environment on Optical Fiber based Sensor

News.

Related to the topic at hand.

Beijing Institute of Space Mechanics and Electricity

A delegation of  50 people from BISME (Bejing Institute of Space Mechanics and Electricity) has visited the Optics Group. The delegation was in  the Netherlands to attend the 6th International Symposium ...

News - October 7, 2019

Beijing Institute of Space Mechanics and Electricity

Weekend of Science – Oct 5-6, 2019

The Weekend of Science is a national science weekend. Every year, various technical institutions open their doors to provide extra activities. This year the theme of our Weekend of Science is: LIGHT. Date ...

News - September 25, 2019

Weekend of Science – Oct 5-6, 2019

Face2Phase – Oct 21-23, 2019

The conference Fase2Phase, 2nd Edition, addresses imaging with phase information and covers topics such as lensless imaging, aberration retrieval, adaptive and active optics, ptychography, holography, tomography, phase retrieval and applications. Date : 21 ...

News - September 10, 2019

Face2Phase – Oct 21-23, 2019