Super-resolution atomic microscopy using orbit angular momentum laser with temporal modulation

TL;DR

This paper introduces a novel microscopy technique that leverages dark-state trapping, spatial and temporal modulation of laser fields, and atomic interactions to surpass the optical diffraction limit, enhancing spatial resolution.

Contribution

It presents a new dark-state trapping method combined with laser modulation to achieve super-resolution atomic microscopy beyond diffraction limits.

Findings

Reduced FWHM of point spread function via temporal modulation

Enhanced spatial resolution using spatially modulated laser beams

Feasibility of proposed experimental protocol discussed

Abstract

In this paper we propose a dark-state-based trapping strategy to break the optical diffraction limit for microscopy. We utilize a spatially dependent coupling field and a probe laser field with temporal and spatial modulation to interact with three-level atoms. The temporal modulation allows us to reduce the full width at half maximum (FWHM) of point spread function, and the spatial modulation help us obtain better spatial resolution than Gaussian beam. In addition, we also propose a proof-of-principle experiment protocol and discuss its feasibility.