Adaptive optics for high-resolution imaging
Adaptive optics (AO) is a technique that corrects for optical aberrations. It was originally
proposed to correct for the blurring effect of atmospheric turbulence on images in ground …
proposed to correct for the blurring effect of atmospheric turbulence on images in ground …
Imaging and computing with disorder
S Gigan - Nature Physics, 2022 - nature.com
Complex and inhomogeneous media are ubiquitous around us. Snow, fog, biological
tissues and turbid water—even just a piece of frosted glass—are opaque to light due to …
tissues and turbid water—even just a piece of frosted glass—are opaque to light due to …
Deep learning wavefront sensing
Y Nishizaki, M Valdivia, R Horisaki, K Kitaguchi… - Optics express, 2019 - opg.optica.org
We present a new class of wavefront sensors by extending their design space based on
machine learning. This approach simplifies both the optical hardware and image processing …
machine learning. This approach simplifies both the optical hardware and image processing …
Phlatcam: Designed phase-mask based thin lensless camera
We demonstrate a versatile thin lensless camera with a designed phase-mask placed at sub-
2 mm from an imaging CMOS sensor. Using wave optics and phase retrieval methods, we …
2 mm from an imaging CMOS sensor. Using wave optics and phase retrieval methods, we …
[HTML][HTML] Ultra-thin 3D lensless fiber endoscopy using diffractive optical elements and deep neural networks
R Kuschmierz, E Scharf… - Light: Advanced …, 2021 - light-am.com
Minimally invasive endoscopes are indispensable in biomedicine. Coherent fiber bundles
(CFBs) enable ultrathin lensless endoscopes. However, the propagation of light through a …
(CFBs) enable ultrathin lensless endoscopes. However, the propagation of light through a …
Harnessing disorder for photonic device applications
For photonic devices, structural disorder and light scattering have long been considered
annoying and detrimental features that were best avoided or minimized. This review shows …
annoying and detrimental features that were best avoided or minimized. This review shows …
On-chip fluorescence microscopy with a random microlens diffuser
We present an on-chip, widefield fluorescence microscope, which consists of a diffuser
placed a few millimeters away from a traditional image sensor. The diffuser replaces the …
placed a few millimeters away from a traditional image sensor. The diffuser replaces the …
Wavefront microscopy using quadriwave lateral shearing interferometry: From bioimaging to nanophotonics
G Baffou - ACS photonics, 2023 - ACS Publications
Common cameras are only sensitive to the intensity of light, discarding an essential feature
of a light wave: its phase profile or, equivalently, its wavefront profile. This Review focuses …
of a light wave: its phase profile or, equivalently, its wavefront profile. This Review focuses …
Roadmap on chaos-inspired imaging technologies (CI2-Tech)
In recent years, rapid developments in imaging concepts and computational methods have
given rise to a new generation of imaging technologies based on chaos. These chaos …
given rise to a new generation of imaging technologies based on chaos. These chaos …
Quantitative phase microscopy using quadriwave lateral shearing interferometry (QLSI): principle, terminology, algorithm and grating shadow description
G Baffou - Journal of Physics D: Applied Physics, 2021 - iopscience.iop.org
Quadriwave lateral shearing interferometry (QLSI) is a quantitative phase imaging technique
based on the use of a diffraction grating placed in front of a camera. This grating creates a …
based on the use of a diffraction grating placed in front of a camera. This grating creates a …