Publications associées à Self-imaging of Azimuthal Intensity Petal Based on Orbital Angular Momentum Beams

Single-shot Kramers-Kronig complex orbital angular momentum spectrum retrieval

Camille Sophie Brès, Jianqi Hu, Yujie Chen

Orbital angular momentum (OAM) spectrum diagnosis is a fundamental building block for diverse OAM-based systems. Among others, the simple on-axis interferometric measurement can retrieve the amplitude and phase information of complex OAM spectra in a few s ...

SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS2023

Multipolar Pseudochirality-Induced Optical Torque

Olivier Martin, Karim Achouri, Mintae Chung, Andrei Kiselev

It has been observed that achiral nanoparticles, such as flat helices, may be subjected to an optical torque even when illuminated by normally incident linearly polarized light. However, the origin of this fascinating phenomenon has so far remained mostly ...

Amer Chemical Soc2023

Experimental demonstration of dynamic spatiotemporal structured beams that simultaneously exhibit two orbital angular momenta by combining multiple frequency lines, each carrying multiple Laguerre-Gaussian modes

Tobias Kippenberg, Hao Song, Maxim Karpov, Zhe Zhao, Xinzhou Su

In general, there are different, relatively independent forms of orbital angular momenta at a given propagation distance, which might exhibit different dynamic spatial characteristics. One type involves a beam with a helical phase-front that rotates around ...

Optica Publishing Group2022

Generation of OAM-carrying space-time wave packets with time-dependent beam radii using a coherent combination of multiple LG modes on multiple frequencies

Tobias Kippenberg, Hao Song, Maxim Karpov, Zhe Zhao, Xinzhou Su

Space-time (ST) wave packets, in which spatial and temporal characteristics are coupled, have gained attention due to their unique propagation characteristics, such as propagation invariance and tunable group velocity in addition to their potential ability ...

Optica Publishing Group2022

Hard X-ray helical dichroism of disordered molecular media

Majed Chergui, Jérôme Lacour, Christian David, Giulia Fulvia Mancini, Malte Oppermann, Dominik Kinschel, Oliviero Cannelli, Camila Bacellar Cases Da Silveira

Chirality is a structural property of molecules lacking mirror symmetry that has strong implications in diverse fields, ranging from life sciences to materials science. Chirality-sensitive spectroscopic methods, such as circular dichroism, exhibit weak sig ...

Nature Publishing Group2022

Tunability of space-time wave packet carrying tunable and dynamically changing OAM value

Tobias Kippenberg, Hao Song, Maxim Karpov, Xinzhou Su

Space-time (ST) wave packets have gained much interest due to their dynamic optical properties. Such wave packets can be generated by synthesizing frequency comb lines, each having multiple complex-weighted spatial modes, to carry dynamically changing orbi ...

Optica Publishing Group2022

Spectral self-imaging of optical orbital angular momentum modes

Yin Chen, Camille Sophie Brès, Jianqi Hu, Yujie Chen

The Talbot self-imaging effect is mostly present in the forms of space or time, or in the frequency domain by the Fourier duality. Here, we disclose a new spectral Talbot effect arising in optical orbital angular momentum (OAM) modes. The effect occurs in ...

AIP Publishing2021

Versatile shaping of optical frequency combs and applications

Jianqi Hu

Optical frequency combs are a series of phase-locked and equidistant laser lines in the spectral domain. In the time domain, they correspond to periodic pulse trains by the Fourier relation. The ability to shape optical combs and pulse trains is pivotal to ...

EPFL2021

Fully spin-polarized bulk states in ferroelectric GeTe

Jan Hugo Dil, Mauro Fanciulli

By measuring the spin polarization of GeTe films as a function of light polarization we observed that the bulk states are fully spin polarized in the initial state, in strong contrast with observations for other systems with a strong spin-orbit interaction ...

2020

Angular Momentum in Rotating Superfluid Droplets

Camila Bacellar Cases Da Silveira, Christoph Bostedt

The angular momentum of rotating superfluid droplets originates from quantized vortices and capillary waves, the interplay between which remains to be uncovered. Here, the rotation of isolated submicrometer superfluid He-4 droplets is studied by ultrafast ...

AMER PHYSICAL SOC2020

Generation of acoustic helical wavefronts using metasurfaces

Juan Ramon Mosig, Hervé Lissek, Seyyed Hussein Seyyed Esfahlani

It has been shown that acoustic waves with helical wavefronts can carry angular momentum, which can be transmitted towards a propagating medium. Such a wave field can be achieved by using a planar array of electroacoustic transducers, forming a given spati ...

2017

Spin Polarization and Attosecond Time Delay in Photoemission from Spin Degenerate States of Solids

Stefan Peter Muff, Jan Hugo Dil, Mauro Fanciulli

After photon absorption, electrons from a dispersive band of a solid require a finite time in the photoemission process before being photoemitted as free particles, in line with recent attosecond-resolved photoemission experiments. According to the Eisenbu ...

American Physical Society2017

Angular analysis of the B-0 -> K*(0) mu(+) mu(-) decay using 3 fb(-1) of integrated luminosity

Christoph Frei, Peter Clarke, Jean Wicht, Alessandro Mapelli, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, François Fleuret, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Hans Dijkstra, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Axel Kuonen, Olivier Göran Girard, Liang Sun, Maxime Schubiger, Thibaud Humair, Xiaoxue Han, Greig Alan Cowan, Paolo Durante, Jessica Prisciandaro, Ilya Komarov, Zhirui Xu, Mark Tobin, Victor Coco, Violaine Bellée, Mirco Dorigo, Sebastiana Gianì, Maurizio Martinelli, Guido Andreassi, Maxim Borisyak, Jian Wang, Liupan An, , , , , , , , , , , ,

Device for Determining a Bidirectional Reflectance Distribution Function of a Subject

Martin Vetterli, Loïc Arnaud Baboulaz, Gaël Georges Soudan

The present invention relates to a device (10) for determining a bidirectional reflectance distribution function of a subject (S) comprising: a light source (LS) for producing an incident light (li) and directing said incident light (li) onto a subject (S) ...

2016

Quantum numbers of the X(3872) state and orbital angular momentum in its rho(0)J/psi decay

Christoph Frei, Peter Clarke, Alessandro Mapelli, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Hans Dijkstra, Julien Rouvinet, Frédéric Guillaume Dupertuis, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Liang Sun, Thibaud Humair, Barinjaka Rakotomiaramanana, Xiaoxue Han, Greig Alan Cowan, Paolo Durante, Jessica Prisciandaro, Ilya Komarov, Zhirui Xu, Mark Tobin, Victor Coco, Mirco Dorigo, Sebastiana Gianì, Maurizio Martinelli, Jian Wang, Liupan An, Yi Zhang, Lei Zhang, Luca Pescatore, Adam Davis, Pietro Marino, , , , , , ,

The Orbital Angular Momentum (OAM) Multiplexing Controversy: OAM as a subset of MIMO

Juan Ramon Mosig, Julien Perruisseau-Carrier, Michele Tamagnone, Joana Rita Alves dos Santos Silva, Santiago Capdevila Cascante

Recently the orbital angular momentum (OAM) multiplexing scheme has been proposed to increase supposedly without limit the channel capacity between a transmitter and a receiver nodes communicating in line of sight. A controversy arose about the far-field e ...

2015

Measurement of psi (2S) polarisation in pp collisions at root s=7 TeV

Christoph Frei, Peter Clarke, Jean Wicht, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, Joël Bressieux, Johan Luisier, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Pierre Jaton, Hans Dijkstra, Julien Rouvinet, Frédéric Guillaume Dupertuis, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Chitsanu Khurewathanakul, Frédéric Blanc, Matthew Needham, Raluca Anca Muresan, Liang Sun, Songmei Wu, Barinjaka Rakotomiaramanana, Xiaoxue Han, Greig Alan Cowan, Paolo Durante, Jessica Prisciandaro, Vladislav Balagura, Ilya Komarov, Zhirui Xu, Mark Tobin, Victor Coco, Mirco Dorigo, Sebastiana Gianì, Maurizio Martinelli, Jian Wang, Liupan An, Yi Zhang, , , , , , , , , ,

Effects of High Angular Momentum on the Unimolecular Dissociation of CD2CD2OH: Theory and Comparisons with Experiment

Michele Ceriotti

This paper explores the dynamics of a highly rotationally and vibrationally excited radical, CD2CD2OH. The radical is produced from the 193 nm photodissociation of 2-bromoethanol-d(4), so it is imparted with high angular momentum and high vibrational energ ...

American Chemical Society2013

Differential branching fraction and angular analysis of the decay B-0 -> K*(0)mu(+)mu(-)

Christophe Salzmann, Christoph Frei, Peter Clarke, Jean Wicht, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, Joël Bressieux, Vincent Fave, Johan Luisier, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Olivier Schneider, Pierre Jaton, Hans Dijkstra, Julien Rouvinet, Frédéric Guillaume Dupertuis, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Anne Keune, Frédéric Blanc, Matthew Needham, Raluca Anca Muresan, Liang Sun, Lucía Castillo García, Songmei Wu, Barinjaka Rakotomiaramanana, Luis Alberto Granado Cardoso, Greig Alan Cowan, Jessica Prisciandaro, Daniel Hugo Cámpora Pérez, Vladislav Balagura, Ilya Komarov, Albert Puig Navarro, Mark Tobin, Victor Coco, Maurizio Martinelli, Plamen Hristov Hopchev, , , , , , , , ,

Differential Branching Fraction and Angular Analysis of the Decay B-0 -> K*(0)mu(+)mu(-)

Christophe Salzmann, Christoph Frei, Peter Clarke, Aurelio Bay, Minh Tâm Tran, Marc-Olivier Bettler, Cédric Potterat, Neal Gauvin, Christophe Bauer, Joël Bressieux, Vincent Fave, Johan Luisier, Tatsuya Nakada, Guido Haefeli, Niko Neufeld, Mathias Oleg Knecht, Olivier Schneider, Pierre Jaton, Hans Dijkstra, Julien Rouvinet, Frédéric Guillaume Dupertuis, Frédéric Teubert, Gerhard Raven, Bastien Luca Muster, Anne Keune, Frédéric Blanc, Matthew Needham, Raluca Anca Muresan, Barinjaka Rakotomiaramanana, Greig Alan Cowan, Jessica Prisciandaro, Vladislav Balagura, Albert Puig Navarro, Mark Tobin, Victor Coco, Plamen Hristov Hopchev, Jian Wang, Yi Zhang, Lei Zhang, Michel De Cian, Wenyu Zhang,