Focusing Optical Phased Array for Optically Enabled Probing of the Retina with Subcellular Resolution
Optics
2024-06-21 v1 Applied Physics
Abstract
We present a silicon-nitride-based optical phased array with built-in focusing and steering capability, that operates at 522 nm and is aimed at complementing a micro-electrode array for joint electrical and optical probing of retinal tissue. It achieves subcellular resolution with a beam diameter of 1.4 um at a focal point located above the chip. Targeted cellular excitation can be achieved by steering the beam through a combination of wavelength tuning and simplified thermo-optical phase shifters with a single electrical input for each of transverse beam steering and selection of the focal plane.
Cite
@article{arxiv.2406.14406,
title = {Focusing Optical Phased Array for Optically Enabled Probing of the Retina with Subcellular Resolution},
author = {Pedram Hosseini and Prachi Agrawal and Alireza Tabatabaei Mashayekh and Sandra Johnen and Jeremy Witzens and Florian Merget},
journal= {arXiv preprint arXiv:2406.14406},
year = {2024}
}