Work

Diffraction Interference Induced Superfocusing in Nonlinear Talbot Effect

Year: 2014

Type: article

Abstract: We report a simple, novel subdiffraction method, i.e. diffraction interference induced superfocusing in second-harmonic (SH) Talbot effect, to achieve focusing size of less than λSH/4 (or λpump/8) without involving evanescent waves or subwavelength apertures. By tailoring point spread functions with Fresnel diffraction interference, we observe periodic SH subdiffracted spots over a hundred of micrometers away from the sample. Our demonstration is the first experimental realization of the Toraldo di Francia's proposal pioneered 62 years ago for superresolution imaging.

Source: Scientific Reports

DOI: 10.1038/srep06134

Authors: Dongmei Liu, Yong Zhang, Jianming Wen, Zhenhua Chen, Dunzhao Wei, Xiaopeng Hu, Gang Zhao, S. N. Zhu, Min Xiao

Institutions: National Laboratory of Solid State Microstructures, Nanjing University, Yale University, University of Arkansas at Fayetteville

Language: English

Topic: Near-Field Optical Microscopy

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funders: National Natural Science Foundation of China, Government of Jiangsu Province, Priority Academic Program Development of Jiangsu Higher Education Institutions, National Key Research and Development Program of China