Lensless single-fiber ghost imaging

Author:

Wakayama ToshitakaORCID,Higuchi Yudai,Kondo Rikuto,Mizutani Yasuhiro1ORCID,Higashiguchi Takeshi2ORCID

Affiliation:

1. Osaka University

2. Utsunomiya University

Abstract

We demonstrate lensless single-fiber ghost imaging, which allows illumination and collection using a single optical fiber without a transmission-type system. Speckle patterns with relative coincidence degrees of 0.14 were formed by image reconstruction using improved differential ghost imaging. Employing fiber with a diameter of 105 µm, we achieved a spatial resolution of 0.05 mm in an observing area of 9mm2, at a working distance of 10 mm. Compared to a conventional neuroendoscope at a power density of 94mW/cm2, our imaging could be realized by extremely weak illumination at a laser power density of 0.10mW/cm2. Using our lensless single-fiber ghost imaging, with 30,000 speckle patterns and implementing a diffuser, we attained an average coincidence degree of 0.45.

Funder

Osawa Scientific Studies Grants Foundation

Sumitomo Foundation

Amada Foundation

Uehara Memorial Foundation

Japan Society for the Promotion of Science

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering

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