Article
Physics, Multidisciplinary
N. Carlon Zambon, Z. Denis, R. De Oliveira, S. Ravets, C. Ciuti, I. Favero, J. Bloch
Summary: By embedding quantum wells into semiconductor microresonators, tightly confined and mutually interacting excitonic, optical, and mechanical modes can coexist. In this study, we investigate the parametric modulation of optical and excitonic resonances by the interaction with a mechanical mode in the strong exciton-photon coupling regime. We find that the exciton-phonon coupling in semiconductors leads to a significant enhancement of polariton-phonon interactions, making it possible to achieve near-unity single-polariton quantum cooperativity on current semiconductor resonator platforms. We also analyze how polariton nonlinearities affect dynamical backaction, altering the ability to cool or amplify the mechanical motion.
PHYSICAL REVIEW LETTERS
(2022)
Article
Nuclear Science & Technology
Denis Alexander Wisniewski, Mark A. Prelas
Summary: A model for a solid state nuclear pumped laser (SSNPL) has been developed, including spatial inhomogeneities of electron-hole pairs. The MCNP model was used to transport U-235 fission fragments and determine 1-dimensional spatial inhomogeneity. The SSNPL has the potential to be compact, low mass and efficient, with laser efficiencies ranging from 2 to 5%.
PROGRESS IN NUCLEAR ENERGY
(2021)
Article
Optics
N. Dogru, H. S. Duranoglu Tunc, A. M. AL-Dabbagh
Summary: This study investigates the output pulses of an InAs-InP quantum dot laser by using theoretical models, showing that shorter pulses can be obtained by applying an external optical beam.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Matteo Buffolo, Lorenzo Rovere, Carlo De Santi, Daehwan Jung, Justin Norman, John E. Bowers, Robert W. Herrick, Gaudenzio Meneghesso, Enrico Zanoni, Matteo Meneghini
Summary: This paper investigates the impact of dislocation density and active layer structure on the degradation mechanisms of 1.3 μm InAs Quantum Dot (QD) lasers for silicon photonics. The results show that devices grown on native substrate exhibit higher temperature stability, while devices with higher number of layers have higher roll-off currents and degradation rates.
IEEE JOURNAL OF QUANTUM ELECTRONICS
(2021)
Article
Engineering, Manufacturing
Andong Wang, Pol Sopena, David Grojo
Summary: Ultrafast laser inscription (ULI) inside semiconductors, such as gallium arsenide (GaAs), offers new possibilities for 3D monolithic structures in electronic and photonic microdevices. This paper presents a study on ULI inside GaAs and proposes the use of burst-mode irradiation to overcome nonlinear effects and achieve successful machining. The results demonstrate the potential application of the proposed method for 3D structuring inside GaAs.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2022)
Article
Optics
Bozhang Dong, Mario Dumont, Osama Terra, Heming Wang, Andrew Netherton, John E. Bowers
Summary: Frequency-modulated (FM) laser combs, generated through spatial hole burning, group velocity dispersion, Kerr nonlinearity, and four-wave mixing (FWM), have applications in wavelength-division multiplexing, precision metrology, and ultrafast optical ranging. In this study, a 60 GHz quantum-dot (QD) modelocked laser capable of generating both amplitude-modulated (AM) and FM combs was developed. The Kerr nonlinearity was engineered to improve FM comb bandwidth without the need for group velocity dispersion (GVD) engineering. The QD platform demonstrated a maximum 3-dB bandwidth of 2.2 THz, paving the way for energy-efficient frequency combs in silicon photonic integrated circuits (PICs).
LIGHT-SCIENCE & APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Pan Xia, Bin Sun, Margherita Biondi, Jian Xu, Ozan Atan, Muhammad Imran, Yasser Hassan, Yanjiang Liu, Joao M. Pina, Amin Morteza Najarian, Luke Grater, Koen Bertens, Laxmi Kishore Sagar, Husna Anwar, Min-Jae Choi, Yangning Zhang, Minhal Hasham, F. Pelayo Garcia de Arquer, Sjoerd Hoogland, Mark W. B. Wilson, Edward H. Sargent
Summary: This research reports a novel co-passivation strategy for fabricating indium arsenide CQD photodetectors, which maintains charge carrier mobility and improves passivation by using methyl ammonium acetate and indium chloride as ligands, resulting in a doubling of the photoluminescence lifetime. The resulting devices achieved a 37% external quantum efficiency (EQE) at 950 nm, the highest reported value for InAs CQD photodetectors.
ADVANCED MATERIALS
(2023)
Article
Optics
Junsong Peng, Zihan Zhao, Sonia Boscolo, Christophe Finot, Srikanth Sugavanam, Dmitry Churkin, Heping Zeng
Summary: This study observed different types of breather complexes in a mode-locked fiber laser, with intermolecular temporal separation reaching several hundreds of picoseconds, indicating long-range interactions. This opens the possibility of studying the dynamics of many-body systems where breathers are the elementary constituents.
LASER & PHOTONICS REVIEWS
(2021)
Article
Engineering, Electrical & Electronic
Ana Filipa Ribeiro, Adam F. Forrest, Maria Ana Cataluna
Summary: Pure Q-switching behavior is demonstrated for the first time in an optically injected two-section quantum-dot laser. The operation regime can be switched from free-running mode-locking to locked Q-switching with optical injection. The pulse repetition rate can be tuned by adjusting the injection power and absorber reverse bias, while the Q-switched output can be spectrally tunable by tuning the master laser.
IEEE PHOTONICS JOURNAL
(2022)
Article
Multidisciplinary Sciences
Jingyi Tian, Qi Ying Tan, Yutao Wang, Yihao Yang, Guanghui Yuan, Giorgio Adamo, Cesare Soci
Summary: The authors demonstrate a lithography-free, vertical-emitting, single-mode laser emitting in the green by using a few monolayers of perovskite quantum dots. This topological laser overcomes the limitations of low directionality and complex design requirements.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Alexey M. Nadtochiy, Nikita Yu Gordeev, Anton A. Kharchenko, Sergey A. Mintairov, Nikolay A. Kalyuzhnyy, Yury S. Berdnikov, Yuriy M. Shernyakov, Mikhail Maximov, Alexey E. Zhukov
Summary: The modal absorptions in laser-like heterostructures containing InAs self-assembled quantum dots (QDs) and InGaAs quantum well-dots (QWDs) have been studied, with per-layer modal absorptions determined. The introduction of the layer gain constant allows for comparison of quantum heterostructures with different dimensionality, showing that the QWD layer gain constant significantly exceeds quantum well and quantum dot ones.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Jan-Philipp Koester, Hans Wenzel, Joerg Fricke, Olaf Brox, Anissa Zeghuzi, Andre Mueller, Lara Sophie Theurer, Bernd Sumpf, Andrea Knigge, Guenther Traenkle
Summary: This study presents AlCaAs-based monolithically integrated dual-wavelength lasers and master-oscillator power-amplifiers emitting around 785 nm. These devices achieve a near-diffraction-limited beam quality and single longitudinal mode emission over a wide range of output powers. The design uses two differently deep etched ridge waveguides for lateral optical confinement, allowing for alternating dual wavelength operation and simultaneous dual wavelength operation for applications in spectroscopy and THz-radiation generation.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhijian Shen, Zhuo Deng, Xuyi Zhao, Jian Huang, Lu Yao, Xinbo Zou, Chunfang Cao, Qian Gong, Baile Chen
Summary: This article demonstrates the optical properties of a long-wave infrared InAs/GaAs sub-monolayer quantum dot quantum cascade photodetector grown on a GaAs substrate, showing its potential competitiveness in long-wave infrared imaging applications.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Zi-Hao Wang, Wen-Qi Wei, Qi Feng, Ting Wang, Jian-Jun Zhang
Summary: Silicon-based InAs quantum dot mode locked lasers offer advantages of high frequency, low power consumption, and low-cost production, but larger linewidths may introduce additional phase noise. A demonstration of a single section MLL grown on a silicon substrate showed significant reduction in RF linewidth through self-injection feedback locking.
Review
Optics
Kuen Yao Lau, Xiaofeng Liu, Jianrong Qiu
Summary: MXenes are a new class of two-dimensional materials with huge potential in photonics, electronics, and energy fields. Recent studies have shown that MXenes can replace traditional saturable absorbers, exhibiting high saturable absorption, flexible modulation ability, and high electron density. This review summarizes the synthesis and characterization of MXene, focusing on its nonlinear saturable absorption and its application as a saturable absorber in mode-locked fiber lasers.
LASER & PHOTONICS REVIEWS
(2022)
Article
Engineering, Electrical & Electronic
Nikolaos A. Stathopoulos, Iraklis Simos
Summary: This study proposes and applies discrete models for the simulation of non-uniform FBG and fs-Laser inscribed FBG. Necessary modifications for their applications in chirped, apodized and Erbium-doped gratings are presented, with emphasis on the Transmission-Line Method. Numerical results are derived, discussed, and focused on fs-Laser inscribed gratings. The influence of uniform inscription with variable duty cycle and inaccurate writing is also assessed. Potential applications for the simulated gratings are discussed and justified by numerical results.
OPTICAL FIBER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
M. Skontranis, G. S. Sarantoglou, A. Bogris, C. Mesaritakis
Summary: In this work, a numerical study on a time-delayed reservoir computing scheme is presented, utilizing a quantum-dot spin polarized vertical cavity surface-emitting laser (QD s-VCSEL) as the single nonlinear node. The scheme exploits the complex temporal dynamics of multiple energy states in quantum dot materials and utilizes dual emission to enhance computational efficiency.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Geosciences, Multidisciplinary
Daniel C. Bowden, Andreas Fichtner, Thomas Nikas, Adonis Bogris, Christos Simos, Krystyna Smolinski, Maria Koroni, Konstantinos Lentas, Iraklis Simos, Nikolaos S. Melis
Summary: Distributed Acoustic Sensing (DAS) and integrated MFFI system are two popular methods for observing seismic wavefields, which acquire strain information from fiber-optic cables in different ways. This paper quantitatively compares these two methods through theoretical study and practical experiments, highlighting the importance of sensitivity depending on curvature points.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Yang Hong, Stavros Deligiannidis, Natsupa Taengnoi, Kyle R. H. Bottrill, Naresh K. Thipparapu, Yu Wang, Jayanta K. Sahu, David J. Richardson, Charis Mesaritakis, Adonis Bogris, Periklis Petropoulos
Summary: We propose and demonstrate a bidirectional Vanilla-RNN based equalization scheme for O-band CWDM transmission. The Vanilla-RNN equalizer exhibits significantly better BER performance over the conventional DFE for both OOK and PAM4 formats, and is capable of compensating for linear and nonlinear impairments. Our results show that the Vanilla-RNN scheme is a viable solution for simple and effective equalization.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Optics
Iraklis Simos, Christos Simos, Nikolaos A. Stathopoulos
Summary: In this theoretical study, the operation of two semiconductor passively mode-locked lasers coupled through evanescent fields is investigated. The study reveals stable mode locking with low-intensity noise and time-synchronized pulses under specific conditions.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
George Sarantoglou, Adonis Bogris, Charis Mesaritakis, Sergios Theodoridis
Summary: This study proposes a Bayesian learning framework for silicon photonic accelerators, which can significantly reduce operational power consumption while slightly sacrificing classification accuracy. The full Bayesian scheme also provides information about the sensitivity of phase shifters, which can simplify the driving system.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Kostas Sozos, Stavros Deligiannidis, Charis Mesaritakis, Adonis Bogris
Summary: This article proposes a neuromorphic receiver based on recurrent optical spectrum slicing for detection and equalization of coherent modulation formats. The receiver has low power consumption and high data transmission rates.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Dimitris Dermanis, Adonis Bogris, Panagiotis Rizomiliotis, Charis Mesaritakis
Summary: This work presents a physical unclonable function implemented using an integrated photonic neuromorphic device. The physical security feature relies on the complex relation between hardware implemented complex weights and digital trainable weights. The concept paves the way for photonic devices capable of efficient computation and security operations.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Kostas Sozos, Stavros Deligiannidis, George Sarantoglou, Charis Mesaritakis, Adonis Bogris
Summary: The transition to the edge-cloud era demands ultra-high data rate signals and power efficient optical modules. Addressing the challenges of non-linearities and power fading is crucial for high symbol rate systems. In this article, machine learning techniques and neuromorphic processing are proposed as promising solutions for mitigating transmission impairments. The article presents recent work on bidirectional recurrent neural networks and neuromorphic recurrent optical spectrum slicers for non-linearity compensation and power fading mitigation respectively. Evaluations are conducted to compare the performance of these techniques with the state-of-the-art methods in high-speed optical communication systems.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Menelaos Skontranis, George Sarantoglou, Kostas Sozos, Thomas Kamalakis, Charis Mesaritakis, Adonis Bogris
Summary: This paper introduces Fabry-Perot lasers as neuromorphic nodes in the context of time-delayed reservoir computing and extreme learning machine for signal processing and image classification. The experimental validation shows promising results in tasks such as channel equalization for transmission and high-speed image classification.
NEUROMORPHIC COMPUTING AND ENGINEERING
(2023)
Proceedings Paper
Optics
Adonis Bogris, Kostas Sozos, Stavros Deligiannidis, George Sarantoglou, Charis Mesaritakis
Summary: This paper reviews recent research in machine learning and neuromorphic processing for the mitigation of transmission impairments at high baud rates. Bidirectional recurrent neural networks and neuromorphic recurrent spectral slicers are proposed as promising solutions for mid-term deployment in long-haul and short-reach communication systems.
2022 EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
George Sarantoglou, Kostas Sozos, Thomas Kamalakis, Charis Mesaritakis, Adonis Bogris
Summary: In this paper, we present experimental results on dispersion equalization in IM-DD transmission systems using an extreme learning machine based on a Fabry Perot laser. The use of two longitudinal modes provides enhanced computational power and processing speed.
2022 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Adonis Bogris, Christos Simos, Iraklis Simos, Thomas Nikas, Nikolaos S. Melis, Konstantinos Lentas, Charis Mesaritakis, Ioannis Chochliouros, Christina Lessi
Summary: This article describes an experimental microwave frequency dissemination system operating as a sensitive interferometric sensor of seismic waves on commercially deployed fiber networks in Attika, Greece. The study demonstrates efficient detection of seismic waves from distant epicenters (>400km).
2022 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)
(2022)
Proceedings Paper
Computer Science, Artificial Intelligence
Aris Tsirigotis, Ioannis Tsilikas, Kostas Sozos, Adonis Bogris, Charis Mesaritakis
Summary: An integrated photonic reservoir computing scheme has been proposed, utilizing passive optical filters and non-linear mapping for efficient computation. The proposed approach showed superior performance in optical signal transmission and image processing applications.
AI AND OPTICAL DATA SCIENCES III
(2022)
