Nonlinear imaging through a golden spiral multicore fiber

TL;DR

This paper introduces a novel golden spiral multicore fiber enabling lensless two-photon imaging with optimized sidelobe contrast, field of view, and mode control, demonstrated through experimental focal scanning and imaging.

Contribution

The work presents a new fiber design that enhances two-photon imaging capabilities by optimizing multiple optical parameters in a single fiber structure.

Findings

Achieved sidelobe contrast of at least 10.9 dB.

Demonstrated focal point generation and scanning with femtosecond pulses.

Successfully performed two-photon imaging through the fiber.

Abstract

We report two-photon lensless imaging through a novel golden spiral multicore fiber. This unique layout optimizes the sidelobe levels, field of view, cross-talk, group delay and mode density to achieve a sidelobe contrast of atleast 10.9 dB. We demonstrate experimentally the ability to generate and scan a focal point with a femtosecond pulse and perform two-photon imaging.