Deep optical imaging within complex scattering media

S Yoon, M Kim, M Jang, Y Choi, W Choi, S Kang… - Nature Reviews …, 2020 - nature.com
Optical imaging has had a central role in elucidating the underlying biological and
physiological mechanisms in living specimens owing to its high spatial resolution, molecular …

Tailoring light with a digital micromirror device

YX Ren, RD Lu, L Gong - Annalen der physik, 2015 - Wiley Online Library
A digital micromirror device (DMD) is a product of micromechanics. The DMD employs
numerous micromirrors as the actuating components to switch small portions of light on and …

Flexible-type ultrathin holographic endoscope for microscopic imaging of unstained biological tissues

W Choi, M Kang, JH Hong, O Katz, B Lee… - Nature …, 2022 - nature.com
Ultrathin lensless fibre endoscopes offer minimally invasive investigation, but they mostly
operate as a rigid type due to the need for prior calibration of a fibre probe. Furthermore …

Minimally invasive multimode optical fiber microendoscope for deep brain fluorescence imaging

S Ohayon, A Caravaca-Aguirre, R Piestun… - Biomedical optics …, 2018 - opg.optica.org
A major open challenge in neuroscience is the ability to measure and perturb neural activity
in vivo from well defined neural sub-populations at cellular resolution anywhere in the brain …

Transmission matrix of a scattering medium and its applications in biophotonics

M Kim, W Choi, Y Choi, C Yoon, W Choi - Optics express, 2015 - opg.optica.org
A conventional lens has well-defined transfer function with which we can form an image of a
target object. On the contrary, scattering media such as biological tissues, multimode optical …

Digital confocal microscopy through a multimode fiber

D Loterie, S Farahi, I Papadopoulos, A Goy… - Optics express, 2015 - opg.optica.org
Acquiring high-contrast optical images deep inside biological tissues is still a challenging
problem. Confocal microscopy is an important tool for biomedical imaging since it improves …

Focusing light inside dynamic scattering media with millisecond digital optical phase conjugation

Y Liu, C Ma, Y Shen, J Shi, LV Wang - Optica, 2017 - opg.optica.org
Wavefront shaping based on digital optical phase conjugation (DOPC) focuses light through
or inside scattering media, but the low speed of DOPC prevents it from being applied to …

Widefield lensless imaging through a fiber bundle via speckle correlations

A Porat, ER Andresen, H Rigneault, D Oron, S Gigan… - Optics express, 2016 - opg.optica.org
Flexible fiber-optic endoscopes provide a solution for imaging at depths beyond the reach of
conventional microscopes. Current endoscopes require focusing and/or scanning …

Two-photon imaging through a multimode fiber

EE Morales-Delgado, D Psaltis, C Moser - Optics express, 2015 - opg.optica.org
In this work we demonstrate 3D imaging using two-photon excitation through a 20 cm long
multimode optical fiber (MMF) of 350 µm diameter. The imaging principle is similar to single …

Light scattering control in transmission and reflection with neural networks

A Turpin, I Vishniakou, J d Seelig - Optics express, 2018 - opg.optica.org
Scattering often limits the controlled delivery of light in applications such as biomedical
imaging, optogenetics, optical trapping, and fiber-optic communication or imaging. Such …