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A scheme for fast, compact, and controllable acceleration of heavy particles in vacuum is proposed, in which two counterpropagating lasers with variable frequencies drive a beat-wave structure with variable phase velocity, thus allowing for…

Plasma Physics · Physics 2008-11-26 F. Peano , J. Vieira , L. O. Silva , R. Mulas , G. Coppa

The effective management of stochastic characteristics of renewable power generations is vital for ensuring the stable and secure operation of power systems. This paper addresses the task of optimizing the chance-constrained…

Systems and Control · Electrical Eng. & Systems 2024-01-05 Yuanxi Wu , Zhi Wu , Yijun Xu , Huan Long , Wei Gu , Shu Zheng , Jingtao Zhao

High-level penetration of intermittent renewable energy sources (RESs) has introduced significant uncertainties into modern power systems. In order to rapidly and economically respond to the fluctuations of power system operating state,…

Systems and Control · Electrical Eng. & Systems 2023-08-08 Pengfei Wu , Chen Chen , Dexiang Lai , Jian Zhong

The ISAC polarized beam facility uses a Ti:Sapphire laser for producing spin-polarized beams of short-lived radioactive isotopes, initially 7Li. The laser power and spectral content must be tightly controlled and monitored. The control…

Accelerator Physics · Physics 2007-05-23 R. Nussbaumer , D. Dale , H. Hui , J. Richards , P. Levy

This paper presents a problem in power networks that creates an exciting and yet challenging real-world scenario for application of multi-agent reinforcement learning (MARL). The emerging trend of decarbonisation is placing excessive stress…

Machine Learning · Computer Science 2022-01-24 Jianhong Wang , Wangkun Xu , Yunjie Gu , Wenbin Song , Tim C. Green

Active learning (AL) has the potential to drastically reduce annotation costs in 3D biomedical image segmentation, where expert labeling of volumetric data is both time-consuming and expensive. Yet, existing AL methods are unable to…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Carsten T. Lüth , Jeremias Traub , Kim-Celine Kahl , Till J. Bungert , Lukas Klein , Lars Krämer , Paul F. Jäger , Klaus Maier-Hein , Fabian Isensee

Cavity nonlinear optics enables intriguing physical phenomena to occur at micro- or nano-scales with modest input powers. While this enhances capabilities in applications such as comb generation, frequency conversion and quantum optics,…

Optics · Physics 2020-12-11 Joshua B. Surya , Juanjuan Lu , Yuntao Xu , Hong X. Tang

Traditional wavefront control in high-energy, high-intensity laser systems usually lacks real-time capability, failing to address dynamic aberrations. This limits experimental accuracy due to shot-to-shot fluctuations and necessitates long…

In this paper we extend our recently proposed Deadzone-Adapted Disturbance Suppression (DADS) Control approach from systems with matched uncertainties to general systems in parametric strict feedback form. The DADS approach prevents gain…

Optimization and Control · Mathematics 2024-02-28 Iasson Karafyllis , Miroslav Krstic , Alexandros Aslanidis

This paper proposes and analyzes an accelerated inexact dampened augmented Lagrangian (AIDAL) method for solving linearly-constrained nonconvex composite optimization problems. Each iteration of the AIDAL method consists of: (i) inexactly…

Optimization and Control · Mathematics 2023-02-08 Weiwei Kong , Renato D. C. Monteiro

This paper proposes a novel low probability of intercept (LPI) waveform design approach for orthogonal frequency-division multiplexing (OFDM)-based integrated sensing and communication systems by introducing artificial phase and Doppler…

Signal Processing · Electrical Eng. & Systems 2026-03-02 Umut Utku Erdem , Lucas Giroto , Tobias Chaloun , Tom Schipper , Taewon Jeong , Christian Karle , Benjamin Nuss , Thomas Zwick

Undersampling can accelerate the signal acquisition but at the cost of bringing in artifacts. Removing these artifacts is a fundamental problem in signal processing and this task is also called signal reconstruction. Through modeling…

Signal Processing · Electrical Eng. & Systems 2024-08-15 Yihui Huang , Zi Wang , Xinlin Zhang , Jian Cao , Zhangren Tu , Meijin Lin , Di Guo , Xiaobo Qu

Arbitrary Detuning ASynchronous OPtical Sampling (ADA-SOPS) is an emerging technique for extending standard pump--probe experiments performed with two femtosecond lasers to multitimescale experiments, which are of great interest for the…

Optics · Physics 2026-04-17 Laura Antonucci , A. Bonvalet , X. Solinas , M. Joffre

We present an experimental realization of the Optical Frequency Locked Loop (OFLL) applied to long-term frequency difference stabilization of broad-line DFB lasers. The presented design, based on an integrated phase-frequency detector chip,…

Instrumentation and Detectors · Physics 2018-09-27 Michał Lipka , Michał Parniak , Wojciech Wasilewski

Optically pumped magnetometers (OPMs) based on alkali-atom vapors are ultra-sensitive devices for dc and low-frequency ac magnetic measurements. Here, in combination with fast-field-cycling hardware and high-resolution spectroscopic…

Chemical Physics · Physics 2021-07-21 Sven Bodenstedt , Morgan Mitchell , Michael Tayler

This paper introduces a novel closed-loop testing methodology for efficient linearity testing of high-resolution Successive Approximation Register (SAR) Analog-to-Digital Converters (ADCs). Existing test strategies, including…

Hardware Architecture · Computer Science 2026-04-24 Thorben Schey , Khaled Karoonlatifi , Michael Weyrich , Andrey Morozov

We consider coupled lasers, where the intensity deviations from the steady state, modulate the pump of the other lasers. Most of our results are for two lasers where the coupling constants are of opposite sign. This leads to a Hopf…

Chaotic Dynamics · Physics 2009-11-11 T. W. Carr , M. L. Taylor , I. B. Schwartz

We study optical cavity locking for laser stabilization through spatial modulation of the phase front of a light beam. A theoretical description of the underlying principle is developed for this method and special attention is paid to…

Optics · Physics 2023-01-18 Sheng Feng , Songqing You , Peng Yang , Fenglei Zhang , Yunlong Sun , Boya Xie

The implementation of a three-level Lambda System in artificial atoms would allow to perform advanced control tasks typical of quantum optics in the solid state realm, with photons in the $\mathrm{\mu m}$/mm range. However hardware…

Quantum Physics · Physics 2015-03-05 P. G. Di Stefano , E. Paladino , A. D'Arrigo , B. Spagnolo , G. Falci

Single-photon avalanche diodes (SPADs) have emerged as a promising candidate for optical wireless communication (OWC) owing to their ultra-high sensitivity and singlephoton detection capability. However, under strong background radiation or…

Signal Processing · Electrical Eng. & Systems 2026-05-28 Chen Wang , Zhiyong Xu , Jingyuan Wang , Jianhua Li , Weifeng Mou , Huatao Zhu