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9 papers · 1 filter
Methods, trade-offs and opportunities in high-speed optical microscopy for neural voltage imaging
Zhaoqiang Wang, Ruth R. Sims, Sheng Xiao +6
High-speed optical imaging of dynamic neuronal activity is essential yet challenging in neuroscience. While calcium imaging has been firmly established as a workhorse technique for…
Magnetic sub-micron rods for quantitative viscosity imaging using heterodyne holography
C. Gentner, J. -F. Berret, P. Berto +3
Many processes in microfluidics and biology are driven or affected by viscosity. While several methods are able to measure this parameter globally, very few can provide high resolu…
Hollow-core fibers with reduced surface roughness and ultralow loss in the short-wavelength range
Jonas H. Osório, Foued Amrani, Frédéric Delahaye +9
While optical fibers display excellent performances in the infrared, visible and ultraviolet ranges remain poorly addressed by them. Obtaining better fibers for the short-wavelengt…
Reference-less complex wavefields characterization with a high-resolution wavefront sensor
Tengfei Wu, Pascal Berto, Marc Guillon
Wavefront sensing is a widely-used non-interferometric, single-shot, and quantitative technique providing the spatial-phase of a beam. The phase is obtained by integrating the meas…
Non-invasive single-shot recovery of point-spread function of a memory effect based scattering imaging system
Tengfei Wu, Jonathan Dong, Sylvain Gigan
Accessing the point-spread function (PSF) of a complex optical system is important for a variety of imaging applications. However, placing an invasive point source is often impract…
Distortion matrix concept for deep optical imaging in scattering media
Amaury Badon, Victor Barolle, Kristina Irsch +3
In optical imaging, light propagation is affected by the inhomogeneities of the medium. Sample-induced aberrations and multiple scattering can strongly degrade the image resolution…