Article
Mathematics, Interdisciplinary Applications
M. Tlidi, S. S. Gopalakrishnan, M. Taki, K. Panajotov
Summary: The study reveals the presence of stable light bullets and clusters in the monostable regime, as well as the occurrence of three-dimensional dissipative structures in a strongly nonlinear regime with subcritical modulational instability. It highlights the formation of optical 3D crystals in both super-and sub-critical modulational instability regimes, with body-centered-cubic (bcc) crystals predicted to be the most predominant. Numerical simulations confirm the robustness of bcc crystals compared to other self-organized structures. Additionally, the formation of light bullets and clusters in a bistable regime is demonstrated.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Physics, Multidisciplinary
S. S. Gopalakrishnan, K. Panajotov, M. Taki, M. Tlidi
Summary: Stable dissipative light bullets are found in Kerr cavities, forming isolated structures or clusters. The number and distribution of light bullets are determined by initial conditions, with constant peak power. Increasing beam strength leads to unstable light bullets and the formation of giant, short-lived pulses, with statistical characteristics revealing extreme events known as rogue waves.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
S. S. Gopalakrishnan, M. Tlidi, M. Taki, K. Panajotov
Summary: The existence of breathing dissipative light bullets in a birefringent optical resonator filled with Kerr media is demonstrated. The propagation of light inside the cavity for each polarized component, which is coupled by cross-phase modulation, is described by the coupled Lugiato-Lefever equations. The space-time dynamics of breathing light bullets are described using Stokes parameters and frequency spectra.
Article
Optics
K. Panajotov, Mustapha Tlidi, Yufeng Song, Han Zhang
Summary: This study investigates arrays of coupled nonlinear optical cavities under coherent optical injection using the discrete generalized Lugiato-Lefever equation. It predicts the formation of stable three-dimensional localized structures, known as discrete light bullets, and clusters of them in the output of the coupled optical resonators. The research considers both anomalous and normal dispersion, resulting in the generation of bright and dark discrete light bullets, respectively.
Article
Optics
A. K. Shafeeque Ali, A. Govindarajan, M. Lakshmanan
Summary: This paper carries out a theoretical investigation on the propagation of spatiotemporal solitons in nonlinear metamaterial waveguides, finding that stable propagation of solitons can occur in certain conditions for both positive and negative index regimes of metamaterials.
Article
Optics
Yaroslav Kartashov
Summary: This study predicts that photonic moire lattices formed by two mutually twisted periodic sublattices in a medium with Kerr nonlinearity can support stable three-dimensional light bullets localized in both space and time. The stability of the light bullets is closely related to the properties of linear spatial eigenmodes of the moire lattices, and the periodicity/aperiodicity of the underlying lattice plays a crucial role in determining their stability properties.
Article
Engineering, Electrical & Electronic
J. P. Abbo, A. Alim, C. G. L. Tiofack, A. Mohamadou
Summary: The spatiotemporal modulation instability (MI) in a fiber Bragg grating with cubic-quintic nonlinearities and parity-time symmetry is investigated. The dispersion relation equation of the spatiotemporal MI is derived using a linear stability analysis. The impact of quintic nonlinearity and gain/loss coefficient on the occurrence of the spatiotemporal MI is studied in both normal and anomalous dispersion regimes.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Salim B. Ivars, Yaroslav Kartashov, Lluis Torner, J. Alberto Conejero, Carles Milian
Summary: A novel and robust phenomenon has been uncovered where spatiotemporal Kerr cavity patterns in cylindrical microresonators gradually self-replicate. These patterns, which are inherently synchronized multi-frequency combs, experience transitions among patterns with different numbers of rows under proper conditions. The self-replications result in stepwise additions or removals of individual combs along the cylinder's axis in a fully reversible and deterministic way.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Chao Mei, Ihar Babushkin, Tamas Nagy, Guenter Steinmeyer
Summary: Multimode nonlinear optics has overcome a long-standing limitation of fiber optics, enabling the coherent transport of a wave packet through a multimode fiber. In a similar scenario, the temporal compression of multimillijoule pulses to few-cycle duration in hollow gas-filled fibers has also been achieved. By extending a formalism for mode locking, researchers have revealed the formation and existence of stable spatiotemporal light bullets in fiber systems, as well as predicted the presence of multimode solitons in a wider range of fiber types.
PHOTONICS RESEARCH
(2022)
Article
Mathematics, Interdisciplinary Applications
Zhiming Chen, Zexing Wu, Jianhua Zeng
Summary: The search for three-dimensional spatiotemporal solitons has become a hot topic in nonlinear physics. This study investigates the formation and stability properties of light gap bullets in periodic media with defocusing nonlinearity. The results show that these light gap bullets, which exist within finite band gaps, can be stable under certain conditions.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Mathematics, Interdisciplinary Applications
Krassimir Panajotov, Mustapha Tlidi, Yufeng Song, Han Zhang
Summary: In this study, we investigate a system of coupled weakly birefringent cavities filled with nonlinear Kerr material and subject to linearly polarized optical injection. Our findings demonstrate that the system supports stable three-dimensional vector localized structures known as discrete vector light bullets. We observe the generation of bright and dark discrete vector light bullets under both anomalous and normal dispersion conditions. Additionally, by increasing the coupling strength between the cavities, we observe the existence of coexisting light bullets with varying polarization degrees ranging from predominantly linear to predominantly circular. Moreover, we discover that chaotic spatio-temporal dynamics can be achieved even when the distribution of light bullets in the system is stationary under certain injection strengths.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Chemistry, Physical
Lucas Huber, Sebastian F. Maehrlein, Feifan Wang, Yufeng Liu, X. -Y. Zhu
Summary: The ultrafast optical Kerr effect is commonly used to investigate structural dynamics and interactions of materials, with non-degenerate mixing schemes allowing for more accurate detection. Two-color experiments can reveal sources of temporal dynamics in the OKE signal, showing how birefringence in crystalline solids can entirely change the character of the signal.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Mathematics, Interdisciplinary Applications
V. A. Khalyapin, A. N. Bugay
Summary: The dynamics of light bullets in the Raman active and ionized medium were analyzed using the moment method. A system of ordinary differential equations was obtained for the pulse's parameters, including amplitude, temporal duration, chirp parameter, temporal delay, frequency shift, transverse size, and curvature of wave surfaces. The stability range of the light bullet was defined using the Lyapunov method.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Optics
Mustafa Bayram
Summary: This study aims to solve the (3+1) dimensional Biswas-Milovic equation and obtain bullet solutions for both the Kerr law and parabolic law nonlinearities. The originality lies in the use of new and classical methods to solve these equations, and the analysis of parameter effects using 2D, 3D, and contour graphics.
News Item
Optics
Volkan Gurses
Summary: The free-carrier dispersion effect allows for all-optical control of the resonance of photonic crystal microcavities by utilizing photo-excited free carriers. A spatial light modulator comprising optically addressed cavity arrays has been developed using this technique, enabling high-efficiency and high-bandwidth spatiotemporal modulation of light.
Article
Astronomy & Astrophysics
Salvatore Butera, Niclas Westerberg, Daniele Faccio, Patrik Ohberg
CLASSICAL AND QUANTUM GRAVITY
(2019)
Article
Optics
Alessandro Boccolini, Alessandro Fedrizzi, Daniele Faccio
Article
Physics, Multidisciplinary
V Bruno, C. DeVault, S. Vezzoli, Z. Kudyshev, T. Huq, S. Mignuzzi, A. Jacassi, S. Saha, Y. D. Shah, S. A. Maier, D. R. S. Cumming, A. Boltasseva, M. Ferrera, M. Clerici, D. Faccio, R. Sapienza, V. M. Shalaev
PHYSICAL REVIEW LETTERS
(2020)
Article
Chemistry, Analytical
Vincenzo Bruno, Stefano Vezzoli, Clayton DeVault, Thomas Roger, Marcello Ferrera, Alexandra Boltasseva, Vladimir M. Shalaev, Daniele Faccio
Article
Chemistry, Multidisciplinary
Vincenzo Bruno, Stefano Vezzoli, Clayton DeVault, Enrico Carnemolla, Marcello Ferrera, Alexandra Boltasseva, Vladimir M. Shalaev, Daniele Faccio, Matteo Clerici
APPLIED SCIENCES-BASEL
(2020)
Article
Optics
Jacob B. Khurgin, Matteo Clerici, Vincenzo Bruno, Lucia Caspani, Clayton DeVault, Jongbum Kim, Amr Shaltout, Alexandra Boltasseva, Vladimir M. Shalaev, Marcello Ferrera, Daniele Faccio, Nathaniel Kinsey
Article
Optics
Yash D. Shah, Peter W. R. Connolly, James P. Grant, Danni Hao, Claudio Accarino, Ximing Ren, Mitchell Kenney, Valerio Annese, Kirsty G. Rew, Zoe M. Greener, Yoann Altmann, Daniele Faccio, Gerald S. Buller, David R. S. Cumming
Article
Chemistry, Analytical
Khaled Kassem, Piergiorgio Caramazza, Kevin J. Mitchell, Mitch Miller, Azadeh Emadi, Daniele Faccio
Summary: Researchers propose a wearable device that uses radar and haptic feedback technology to detect the movement of deaf-blind individuals in real time, providing potential assistance for multi-sensory impaired individuals in the future.
Article
Chemistry, Analytical
Taylor Shields, Adetunmise C. Dada, Lennart Hirsch, Seungjin Yoon, Jonathan M. R. Weaver, Daniele Faccio, Lucia Caspani, Marco Peccianti, Matteo Clerici
Summary: The THz electro-optical sampling technique using single-photon detectors and squeezed vacuum field as the optical probe has been successfully demonstrated in experiments. The sensitivity of the field measurement is limited by the statistical properties of the probe state, which can be improved by using phase-locked single-photon detectors.
Proceedings Paper
Engineering, Electrical & Electronic
Calum Maitland, Daniele Faccio, Fabio Biancalana
2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2019)
Article
Astronomy & Astrophysics
Angus Prain, Calum Maitland, Daniele Faccio, Francesco Marino
Article
Physics, Multidisciplinary
Stefano Vezzoli, Arnaud Mussot, Niclas Westerberg, Alexandre Kudlinski, Hatef Dinparasti Saleh, Angus Prain, Fabio Biancalana, Eric Lantz, Daniele Faccio
COMMUNICATIONS PHYSICS
(2019)
Article
Physics, Multidisciplinary
Niclas Westerberg, Angus Prain, Daniele Faccio, Patrik Ohberg
JOURNAL OF PHYSICS COMMUNICATIONS
(2019)
Article
Optics
Charles Altuzarra, Ashley Lyons, Guanghui Yuan, Christy Simpson, Thomas Roger, Jonathan S. Ben-Benjamin, Daniele Faccio
Article
Optics
Ashley Lyons, Dikla Oren, Thomas Roger, Vassili Savinov, Joao Valente, Stefano Vezzoli, Nikolay I. Zheludev, Mordechai Segev, Daniele Faccio