Article
Optics
Matthew Macnaughtan, Miro Erkintalo, Stephane Coen, Stuart Murdoch, Yiqing Xu
Summary: In this study, Kerr cavities driven in the normal dispersion regime were investigated, and switching waves were found. The fine structure of individual switching waves, including resonant oscillations, was directly observed with nanosecond pulses. The intimate connection between the temporal and spectral features of the dispersive waves associated with switching waves was demonstrated, and the evolution of these dispersive waves with cavity parameters was investigated. Additionally, the generation and observation of stable and persistent dark pulses under quasi-CW pumping conditions were achieved, validating the accuracy of the dispersive wave formalism used.
Article
Optics
A. Bartolo, T. G. Seidel, N. Vigne, A. Garnache, G. Beaudoin, I Sagnes, M. Giudici, J. Javaloyes, S. Gurevich, M. Marconi
Summary: The study explores the impact of optical feedback on the dynamics of an external-cavity passively mode-locked surface-emitting laser, demonstrating that feedback acts as a solution selector that can either enhance or hinder the appearance of multistable harmonic arrangements of pulses. The theoretical analysis successfully replicates the experimental results and highlights asymmetrical resonance tongues caused by parity symmetry-breaking induced by gain depletion.
Article
Optics
Kewei Liu, Zihao Wang, Shunyu Yao, Yanan Guo, Jianchan Yan, Junxi Wang, Changxi Yang, Chengying Bao
Summary: By engineering the laser sweep waveform, AlNon-sapphire soliton microcombs with an intermediate sweep speed were generated and stabilized using different laser sweep methods. Reducing the soliton number was found to be effective in stabilizing the solitons during fast laser sweep.
PHOTONICS RESEARCH
(2023)
Article
Physics, Multidisciplinary
Antonio Cutrona, Vittorio Cecconi, Pierre H. Hanzard, Maxwell Rowley, Debayan Das, Andrew Cooper, Luke Peters, Luana Olivieri, Benjamin Wetzel, Roberto Morandotti, Sai T. Chu, Brent E. Little, David J. Moss, Juan S. Totero Gongora, Marco Peccianti, Alessia Pasquazi
Summary: In this study, the authors investigate the formation of a bonded state between a soliton and a continuous wave in a microresonator-filtered laser using real-time dispersive Fourier transform measurements and theoretical analysis. They find the presence of an elastic bonding between the two states, resulting in an enhancement of the soliton's robustness.
COMMUNICATIONS PHYSICS
(2023)
Article
Optics
Yiqing Xu, Miro Erkintalo, Yi Lin, Stephane Coen, Huilian Ma, Stuart G. Murdoch
Summary: Dual-microcomb generation via synchronous pulsed pumping of a single microresonator has been experimentally demonstrated, showing the generation of coherent dissipative Kerr cavity soliton combs on both polarization axes. This technique has potential applications in spectroscopic measurements.
Article
Optics
Huiran Yang, Xupeng Li, Yao Wang, Wei Jin
Summary: The study successfully demonstrated a mode-locked fiber laser with a TaSe2-based saturable absorber, showcasing the potential of TaSe2 in bright and dark soliton fiber lasers. This research also provided a first insight into the bright and dark soliton properties of a TaSe2-based fiber laser.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Wenhao Xiong, Chuanfei Yao, Pingxue Li, Yixuan Wang, Feiyu Zhu
Summary: In this paper, a new method for generating tunable high-repetition-rate temporal cavity solitons (TCSs) using dual Brillouin laser pulses is reported. This method is more feasible than generating solitons via a continuous optical-driven nonlinear cavity because of the enhanced four-wave mixing process triggered by the high peak intensity Brillouin laser pulses. The generated TCSs can be directly tuned all-optically by locking to the beating signal arriving from dual Brillouin pulses.
IEEE PHOTONICS JOURNAL
(2022)
Article
Optics
Jiahe LI, Weiqi Jiang, Yafei Meng, Fengqiu Wang
Summary: Hysteresis, a common phenomenon in passively mode-locked lasers, refers to the effect where the thresholds marking transitions between different pulsation states are not the same for increasing or decreasing pump power. This letter fully characterizes a figure-9 fiber laser cavity and reveals the relationship between hysteresis and cavity parameters.
Article
Chemistry, Multidisciplinary
Qing Wu, Si Chen, Wenli Bao, Haibin Wu
Summary: This study reports the application of saturable absorbers prepared from graphdiyne-modified tapered fibers to an erbium-doped fiber laser for achieving femtosecond pulse output. Graphdiyne quantum dots were successfully prepared using the Glaser-Hay method. The graphdiyne-based all-fiber saturable absorber device exhibited strong saturable absorption characteristics and successfully generated femtosecond pulses. This work lays the foundation for the application of the nonlinear optical material, graphdiyne, in ultrafast photonics.
Article
Nanoscience & Nanotechnology
Lihui Pang, Meng Zhao, Qiyi Zhao, Lu Li, Rongfeng Wang, Rongqian Wu, Yi Lv, Wenjun Liu
Summary: Nanotechnology is a promising field for technological development, and GaSb materials show great potential for nonlinear optical device applications. This study calculates the electronic band structures of GaSb and validates its application in dissipative soliton fiber lasers. Experimental results demonstrate that a GaSb thin film deposited on a microfiber can generate dissipative soliton laser pulses with a fundamental frequency of 43.5 MHz, indicating its potential in ultrafast optics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Haobin Han, Ruru Wang, Huyue Cao, Xuekun Wen, Chaoqing Dai, Wei Liu, Yueyue Wang
Summary: Pulsating soliton is a unique local structure in nonlinear dissipative systems, with a remarkable periodic fluctuation behavior in amplitude. By utilizing the interaction between vector solitons, vector solitons with rich multi-period pulsation phenomena are obtained in experiments and numerical simulations. Based on the multi-period pulsation phenomenon of vector solitons under polarization modulation, a simple and stable information storage fiber laser is designed, which flexibly regulates the vector period-doubled pulsating soliton by adjusting the polarization state in the cavity. This result promotes the application prospect of vector solitons in optical communication, information storage, and other fields.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Lina Zhao, Wenyu Zhang, Ye Yuan, Luyang Tong, Jingjing Liu, Jie Liu, Yangjian Cai, Yuanmei Gao
Summary: Mo:BiVO4 nanoparticles were successfully used as an optical modulator in a Q-switched all-solid-state Tm:YAP laser for the first time, showing good nonlinear optical parameters in the 2-μm region.
Article
Optics
Zhiwei Zhu, Song Yang, Chaojian He, Xuechun Lin
Summary: This paper presents the numerical observation of vector Pure-quar tic solitons (PQSs) generation and evolution dynamics in a mode-locked fiber laser. The study reveals three stages of the buildup dynamics of vector PQSs: energy amplification, energy pulsation due to cross-phase modulation (XPM) effect, and stabilization. Depending on the strength of cavity-birefringence, both elliptical-polarization and near-linear-polarization vector PQSs can be formed. Furthermore, the transition process from vector PQSs to scalar PQSs is observed with higher cavity-birefringence.
Article
Optics
Zhiwei Zhu, Song Yang, Chaojian He, Xuechun Lin
Summary: This study numerically observes the generation and evolution dynamics of vector PQS in a mode-locked fiber laser using coupled Ginzburg-Landau equations. The results show that both elliptical-polarization vector PQS and near-linear-polarization vector PQS can be formed depending on the cavity-birefringence. Additionally, a transition from vector PQS to scalar PQS is observed with higher cavity-birefringence.
Article
Optics
Shangzhi Xie, Liang Jin, He Zhang, Xiaohui Li, Xiaochen Zhang, Yingtian Xu, Xiaohui Ma
Summary: A tunable mode-locked all-fiber Yb-doped laser with a double offset-splicing step-index few-mode fiber (DOS-SIFMF) is demonstrated for the first time, showing potential application in communication and sensing.
Article
Mathematics, Interdisciplinary Applications
Mansour Eslami, Maryam Kanafchian, Gian-Luca Oppo
Summary: In this study, oscillating and chaotic regimes of honeycomb patterns and dark cavity solitons were examined in a cavity displaying electromagnetically induced transparency. The numerical investigation of the transition to chaotically oscillating honeycombs in a three-level atomic system revealed the dynamical behavior for different control parameter values. It was found that oscillating dark cavity solitons coexist with the honeycomb patterns. The coherent oscillation of these solitons was achieved by selecting an appropriate separation distance, leading to the discovery of a novel regime of chimera states.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Physics, Applied
A. Cutrona, M. Rowley, A. Bendahmane, V. Cecconi, L. Peters, L. Olivieri, B. E. Little, S. T. Chu, S. Stivala, R. Morandotti, D. J. Moss, J. S. Totero Gongora, M. Peccianti, A. Pasquazi
Summary: A detailed study on the free-running stability properties of single solitons is presented, which are the most suitable states for developing robust ultrafast and high repetition rate comb sources. The carrier frequency and repetition rate can be controlled by modulating the laser pump current and the cavity length, providing a path for active locking and long-term stabilization.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Luke Peters, Juan Sebastian Totero Gongora, Vittorio Cecconi, Luana Olivieri, Jacob Tunesi, Alessia Pasquazi, Marco Peccianti
Summary: Efficiency in terahertz (THz) wave generation is a subject of intense research. Currently, generation via quadratic crystals is the most common method due to its simplicity and practicality. This study demonstrates a new approach, using quantum interference (QI) in noncentrosymmetric crystals in conjunction with phase-matched quadratic generation, to generate THz waves. This approach not only explores a new physical setting but also achieves higher conversion efficiencies and control over THz components. It has significant implications for spectroscopy and imaging applications.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Luana Olivieri, Luke Peters, Vittorio Cecconi, Antonio Cutrona, Maxwell Rowley, Juan Sebastian Totero Gongora, Alessia Pasquazi, Marco Peccianti
Summary: Terahertz time-domain imaging aims to reconstruct the full electromagnetic morphology of an object. This method enables three-dimensional microscopy by implementing field-sensitive microvolumetry using time-resolved nonlinear ghost imaging. The technique can separate and discriminate information from different depths and planes, making it suitable for objects with sparse micrometric details.
Article
Physics, Multidisciplinary
Lewis Hill, Gian-Luca Oppo, Pascal Del'Haye
Summary: This work presents the multi-stage symmetry breaking in ring resonators with Kerr nonlinearity, which has potential applications in photonic circuits and optical communications. The results show that the multi-stage symmetry breaking naturally occurs in a resonator with bidirectionally propagating light with orthogonal polarization components.
COMMUNICATIONS PHYSICS
(2023)
Article
Optics
Mark Anthony Carroll, Giampaolo D'Alessandro, Gian Luca Lippi, Gian-Luca Oppo, Francesco Papoff
Summary: We derive nanolaser models that include coherent and incoherent variables and predict the existence of a laser threshold for both single- and multielectron systems. The increase in correlation between absorption and emission processes leads to self-sustained stimulated emission and the dominance of coherent emission. The first-order coherence increases steadily and reaches unity at or beyond threshold, while the transition towards coherent emission becomes sharper with increasing numbers of emitters and cavity modes.
Article
Physics, Multidisciplinary
G. R. M. Robb, J. G. M. Walker, G. -L. Oppo, T. A. Ackemann
Summary: A Bose-Einstein condensate (BEC) interacting with an optical field via a feedback mirror can realize the quantum Hamiltonian Mean Field (HMF) model, which is a typical model for long-range interactions in quantum systems. It has been shown that the self-structuring instability of a initially uniform BEC can evolve in accordance with the predictions of the quantum HMF model, exhibiting quasiperiodic chevron dynamics under strong driving. Under weak driving, the BEC and optical field behave as a two-state quantum system, oscillating regularly between a spatially uniform state and a spatially periodic state. This study also predicts the width of stable optomechanical droplets and their dependence on optical pump intensity.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Optics
Caleb Todd, Zongda Li, Stuart G. Murdoch, Gian-Luca Oppo, Miro Erkintalo
Summary: Temporal Kerr cavity solitons are light pulses that can exist in coherently driven, dispersive resonators with Kerr-type nonlinearity. Previous studies have assumed that the inhomogeneity of the driving field varies slowly across the soliton, leading to linear soliton drift rate. However, in some cases, such as using bichromatic driving or in the presence of third-order dispersion, the assumption of slowly varying inhomogeneity may not hold true.
