Publication
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
Publications associées (35)
Wave-momentum shaping for moving objects in heterogeneous and dynamic media
Romain Christophe Rémy Fleury, Matthieu Francis Malléjac, Bakhtiyar Orazbayev, Stefan Rotter
Light and sound waves can move objects through the transfer of linear or angular momentum, which has led to the development of optical and acoustic tweezers, with applications ranging from biomedical engineering to quantum optics. Although impressive manip ...
2024Multipolar Pseudochirality-Induced Optical Torque
Olivier Martin, Karim Achouri, Andrei Kiselev, Mintae Chung
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 ...
Washington2023Single-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 ENGINEERS2023Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams
Christophe Marcel Georges Galland, Valeria Vento, Sachin Suresh Verlekar, Philippe Andreas Rölli
Nanocavities formed by ultrathin metallic gaps, such as the nanoparticle-on-mirror geometry, permit the reproducible engineering and enhancement of light-matter interaction thanks to mode volumes reaching the smallest values allowed by quantum mechanics. A ...
arXiv2023Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams
Christophe Marcel Georges Galland, Valeria Vento, Sachin Suresh Verlekar
Nanocavities formed by ultrathin metallic gaps permitthe reproducibleengineering and enhancement of light-matter interaction, withmode volumes reaching the smallest values allowed by quantum mechanics.While the enhanced vacuum field in metallic nanogaps ha ...
AMER CHEMICAL SOC2023Generation 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, Maxim Karpov, Zhe Zhao, Hao Song, 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 Group2022Hard X-ray helical dichroism of disordered molecular media
Majed Chergui, Oliviero Cannelli, Giulia Fulvia Mancini, Malte Oppermann, Camila Bacellar Cases Da Silveira, Dominik Kinschel, Christian David, Jérôme Lacour
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 PORTFOLIO2022Tunability of space-time wave packet carrying tunable and dynamically changing OAM value
Tobias Kippenberg, Maxim Karpov, Hao Song, 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 Group2022Spectral self-imaging of optical orbital angular momentum modes
Camille Sophie Brès, Jianqi Hu, Yin Chen, 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 Publishing2021A stability theory beyond the co-rotational setting for critical wave maps blow up
We exhibit non-equivariant perturbations of the blowup solutions constructed in [18] for energy critical wave maps into . Our admissible class of perturbations is an open set in some sufficiently smooth topology and vanishes near the light co ...
2020