Panda, Swayamtrupta
Published in
Frontiers in Astronomy and Space Sciences
The Eigenvector 1 schema, or the main sequence of quasars, was introduced as an analogous scheme to the HR diagram that would allow us to understand the more complex, extended sources - active galactic nuclei (AGNs) that harbor accreting supermassive black holes. The study has spanned more than three decades and has advanced our knowledge of the di...
fryc, irena listowski, maciej martinsons, christophe
Selecting LED retrofits for examination rooms in healthcare buildings involves setting the right balance between lighting quality and energy efficiency. In the case of LEDs incorporated in luminaires used in medical examination rooms, it is essential to consider not only the correlated color temperature (CCT) and color rendering index (CRI Ra) in c...
Suresh, Sisira Martin, Ines Metais, Samuel Vourdaki, Chrysa Coudreau, Sébastien Bartels, Randy Forget, Nicolas Rigneault, Hervé
We introduce and characterize a fast (50 kHz), long range (50 ps) and random-access optical delay line based on an acousto-optic deflector inserted in the Fourier plane of a zero-dispersion line. The advantages of this agile delay line are demonstrated in the context of impulsive stimulated Raman imaging in the low-frequency range (
Alhaddad, Samer Ghouali, Wajdene Baudouin, Christophe Mazlin, Viacheslav
We demonstrate that the fundamental ideas of E. Abbe about the interference nature of transmission microscopy are relevant for imaging of in vivo human eye. The transmission geometry in the eye is achieved by projecting illumination onto the posterior eye (sclera) and using the back-reflected light as a secondary illumination source for anterior ey...
de Miramon, Hélie Sarlin, Wladimir Huerre, Axel Cobelli, Pablo Séon, Thomas Josserand, Christophe
We present a novel experimental technique to characterize the free surface of capillary flows adapted from the Spatio-Temporal Phase Shifting Profilometry (ST-PSP) method introduced by Ri et al. (Journal of Optics, 2019) for solid bodies. The present study is focused on various regimes of capillary flows over inclined surfaces, including drops, riv...
Yu, Hao Sciara, Stefania Chemnitz, Mario Montaut, Nicola Crockett, Benjamin Fischer, Bennet Helsten, Robin Wetzel, Benjamin Nolte, Stefan Wang, Zhiming
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High-dimensional photon states (qudits) are pivotal to enhance the information capacity, noise robustness, and data rates of quantum communications. Time-bin entangled qudits are promising candidates for implementing highdimensional quantum communications over optical fiber networks with processing rates approaching those of classical telecommunica...
fryc, irena listowski, maciej supronowicz, robert martinsons, christophe
This study carried out a literature search and selection in accordance with the PRISMA 2020 protocol to conduct a complete review of the literature describing the electrical, photometrical, and colorimetric parameters of LEDs. Based on it, a significant research gap was found in the field of LED-based lighting retrofits. We prove that there is a la...
Boscolo, Sonia Dudley, J.M. Finot, Christophe
Nonlinear optics is a continuously expanding field due to its wide range of applications covering temporal, spectral, polarization or spatial features of the light signals. 2023 was the celebration of 50 years since the numerical prediction of the existence of solitons in optical fiber by Hasegawa and Tappert and, to celebrate this milestone, Optic...
Le Phu, Thien Le Coq, David Masselin, Pascal
We present the fabrication of a waveguide with integrated injection optics using a laser photoinscription technique in the bulk of a chalcogenide glass. The injection optic is a gradient index lens with a parabolic refractive index profile. Its focusing characteristics depend on the amplitude of the index gradient and the thickness of the lens. The...
Sheveleva, Anastasiia Ermolaev, Andrei Dudley, J.M. Finot, Christophe
We demonstrate that centroid-based clustering of normalized intensity profiles is able to successfully isolate different classes of pulses associated with physically distinct regimes of nonlinear and dispersive propagation in optical fiber. Remarkable for its simplicity, this approach shows how analysis of only the temporal intensity profiles of pr...
