122 citations · 253 across the 13 of their papers we have counts for
13 papers
High-speed object detection with a single-photon time-of-flight image sensor
Germán Mora-Martín, Alex Turpin, Alice Ruget +4
3D time-of-flight (ToF) imaging is used in a variety of applications such as augmented reality (AR), computer interfaces, robotics and autonomous systems. Single-photon avalanche d…
A pulse oximeter based on Time-of-Flight histograms
Yuanyuan Hua, Konstantinos Bantounos, Aravind Venugopalan Nair Jalajakumari +3
A pulse oximeter is an optical device that monitors tissue oxygenation levels. Traditionally, these devices estimate the oxygenation level by measuring the intensity of the transmi…
Super-Resolution Time-Resolved Imaging using Computational Sensor Fusion
C. Callenberg, A. Lyons, D. den Brok +7
Imaging across both the full transverse spatial and temporal dimensions of a scene with high precision in all three coordinates is key to applications ranging from LIDAR to fluores…
3D imaging from multipath temporal echoes
Alex Turpin, Valentin Kapitany, Jack Radford +5
Echo-location is a broad approach to imaging and sensing that includes both man-made RADAR, LIDAR, SONAR and also animal navigation. However, full 3D information based on echo-loca…
Statistical Dependencies Beyond Linear Correlations in Light Scattered by Disordered Media
Ilya Starshynov, Alex Turpin, Philip Binner +1
Imaging through scattering and random media is an outstanding problem that to date has been tackled by either measuring the medium transmission matrix or exploiting linear correlat…
Spatial images from temporal data
Alex Turpin, Gabriella Musarra, Valentin Kapitany +8
Traditional paradigms for imaging rely on the use of a spatial structure, either in the detector (pixels arrays) or in the illumination (patterned light). Removal of the spatial st…
Light scattering control in transmission and reflection with neural networks
Alex Turpin, Ivan Vishniakou, Johannes D. Seelig
Scattering often limits the controlled delivery of light in applications such as biomedical imaging, optogenetics, optical trapping, and fiber-optic communication or imaging. Such…
Engineering of orbital angular momentum supermodes in coupled optical waveguides
A. Turpin, G. Pelegrí, J. Polo +2
In this work we demonstrate the existence of orbital angular momentum (OAM) bright and dark supermodes in a three-evanescently coupled cylindrical waveguides system. Bright and dar…
Conical refraction healing after partially blocking the input beam
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +2
In conical refraction, when a focused Gaussian beam passes along one of the optic axes of a biaxial crystal it is transformed into a pair of concentric bright rings at the focal pl…
Transformation of vector beams with radial and azimuthal polarizations in biaxial crystals
Alex Turpin, Asticio Vargas, Angel Lizana +5
We present both experimentally and theoretically the transformation of radially and azimuthally polarized vector beams when they propagate through a biaxial crystal and are transfo…
Light propagation in biaxial crystals
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +1
We present a formalism able to predict the transformation of light beams passing through biaxial crystals. We use this formalism to show both theoretically and experimentally the t…
Type I and type II second harmonic generation of conically refracted beams
Alex Turpin, Yury V. Loiko, Todor K. Kalkandjiev +3
Type I and type II second harmonic generation (SHG) of a beam transformed by the conical refraction phenomenon are presented. We show that, for type I, the second harmonic intensit…
Multiple rings formation in cascaded conical refraction
A. Turpin, Yu. V. Loiko. T. K. Kalkandjiev, J. Mompart
When a light beam passes through a cascade of biaxial crystals with aligned optic axes, the resulting transverse intensity pattern consists of multiple concentric rings. We provide…