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Status calibration of a pulse shaping system for the high power laser facility based on deep learning

Optics Express 2025年第10期33卷 21776-21795页

作者： Chen, Wei Lu, Xinghua Wang, Xiaochao Fan, Wei Key Laboratory of High Power Laser and Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China

To achieve high-precision and high-efficiency laser pulse shaping in the front-end system of high-power laser facilities, this paper proposes a deep learning model aimed at calibrating the initial operational status of the pulse shaping closed-loop control system. The model swiftly establishes a nonlinear mapping between the designed optical waveforms and the shaping electrical signals generated by the arbitrary waveform generator (AWG). The proposed model employs a U-shaped structure integrated with residual connections as its core network. An attention mechanism comprising the Kolmogorov-Arnold Network (KAN) and the temporal convolution network (TCN) between the model’s input and output layers. The dataset constructed based on the pulse waveforms collected by the front-end system of the SG-ii facility is used to train and test the model. The RMSEs between the predicted AWG waveforms and the targets are less than 5%, as well as the input complex waveforms and the waveforms with a high contrast of 100:1. The RMSEs for waveforms of different shapes and contrasts are less than 3%. The method can rapidly invert AWG shaping electrical signals by optical waveforms with different shapes, pulse widths and contrasts. Based on the model, the output optical waveforms closely approximate the design target in the initial iteration of the closed-loop control system, which will improve accuracy and efficiency of the pulse shaping system. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Closed loop control systems

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Revolutionizing interaction: The role of Artificial Intelligent conversation agents in human-computer interaction 4

Revolutionizing interaction: The role of Artificial Intellig...

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4th International conference on Signal Processing and Machine Learning, CONF-SPML 2024

作者： Yi, Miaoxiang Faculty of Natural Mathematical & Engineering Sciences King’s College London LondonWC2R 2LS United Kingdom

ISBN: (纸本)9781510674721

In the rapidly developing field of artificial intelligence (AI), this paper delve into the significant progress and significance of artificial intelligence conversational agents in enhancing human-computer interaction. Transitioning from this observation, the analysis focuses on the challenges and technological advancements in system design, particularly in terms of Natural Language Processing (NLP) and multilingual capabilities. The specific data collected are then cited to provide examples of analysis. At the heart of the analysis lies the emphasis on the adaptability, interoperability, and user-centric design of Artificial Intelligent conversational agents. Finally, the study reveals the transformative potential of Artificial Intelligent conversational agents in simplifying and enriching interactions, pointing to future developments in the field. © 2024 SPIE.

关键词： Natural language processing systems

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design of high power 532nm solid pulse laser 6

Design of high power 532nm solid pulse laser

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6th conference on Frontiers in optical Imaging and Technology: Novel Imaging systems

作者： Liu, Yachao Yang, Jinbao Wei, Aman Pan, Jianyu Yang, Chen Wang, Xiaohang Zhang, Jun National Key Laboratory of Scattering and Radiation Beijing Institute of Environmental Features Beijing100854 China

ISBN: (数字)9781510679719

ISBN: (纸本)9781510679702

In recent years, with the development of laser technology, lasers have provided a new way for underwater optoelectronic detection of targets. Due to the unique spectral, temporal, and spatial characteristics of lasers, blue-green lasers have a strong ability to penetrate seawater. Therefore, using blue-green lasers as light sources can significantly increase the underwater detection distance. This article takes into account the blue-green window effect of seawater, selects a 532nm solid-state pulse laser as the active light source, and selects a gated image intensifier with a gate width of nanosecond accuracy for underwater imaging. The high-power 532nm solid-state laser mainly consists of a laser, a laser power drive unit, a temperature control unit, and a beam divergence angle control unit. The laser adopts a diode pumped Nd: YAG pulse laser, with a wavelength of 532nm and *** frequency. It has switch control, laser emission control, and output Pin signal. In order to ensure the best field of view, the laser divergence angle and the imaging detector reception angle are synchronously controlled in linkage. By calculating and using numerical control to maintain the divergence angle and reception angle consistent, it meets the field of view requirements and provides technical support for underwater target detection and recognition. © 2024 SPIE.

关键词： Seawater

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Data Communication Among Multiple FPGA Boards with GTP

Data Communication Among Multiple FPGA Boards with GTP

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International conference on Artificial Intelligence and Autonomous Transportation, AIAT 2024

作者： Liu, Xiaojie Wu, Xiaobo Song, Conglei Wang, Wenqin Zheng, Maoxing Qingdao266111 China Ltd. Beijing100089 China

ISBN: (纸本)9789819639649

With accelerated growth in the rail transit industry, high-speed data transmission become more and more necessary. optical communication is a featuring high speed, reliability, and flexibility serial interface communication technology. Also, the parallel processing capability of FPGA is especially advantageous in applications requiring high data throughput or real-time performance. Due to its flexibility and reconfigurability, FPGA is frequently used for prototyping new systems. Implementing serial communication between multiple FPGA boards through optical fiber interfaces integrates the aforementioned advantages. This research work is to design a optical digital communication system with multiple FPGA boards, which can transmitted serially. In order to enable high-speed and reliable transmission among the FPGA boards, the new reliable protocol will be made. © Beijing Paike Culture Commu. Co., Ltd. 2025.

关键词： optical fibers

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A design method of damage effect simulation platform 3

A design method of damage effect simulation platform

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3rd International conference on Advanced Manufacturing Technology and Manufacturing systems, ICAMTMS 2024

作者： Sun, Yong Zheng, Hao Pan, Jian Wu, Jiangpeng Lu, Guangzhao Huang, Junsong Yin, Guochuan Liu, Xiaorang China Research and Development Academy of Machinery Equipment Beijing China Xi'an Modern Control Technology Research Institute Xi'an China

ISBN: (纸本)9781510681804

This paper presents a design method of damage effect simulation platform, which can simulate the process of ammunition damaging the target, including the basic model of incoming ray simulation, the basic model of projectile hitting the target, the basic model of simulation of the distance between the projectile impact point and the target during indirect aiming firing, the basic model of damage armor target simulation, the basic model of terminal guidance projectile hitting the target in indirect aiming firing It is composed of the basic simulation model of the target exposed body and other models. © 2024 SPIE.

关键词： Data modeling design Instrument modeling Computer simulations Missiles Geodesy Defense and security Injuries Fire Performance modeling

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Metaverse of intelligent distribution system for rail transit 4

Metaverse of intelligent distribution system for rail transi...

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4th International conference on Testing Technology and Automation engineering, TTAE 2024

作者： Xiang, Dong Zheng, Yan Lin, Shan Li, Kunpeng Liao, Zhenning Li, Jiaxu Zhao, Meijun Qiang, Huang Xu, Shaolun Wang, Hongjie Shanghai Jiao Tong University Department of Electrical Engineering No. 800 Dongchuan Road Minhang District Shanghai200240 China Guangzhou Metro Design and Research Institute Co. Ltd. 204 Huanshi West Road Guangzhou510010 China

ISBN: (数字)9781510686656

ISBN: (纸本)9781510686649

For the first time, the Luotuoqiao Station of Ningbo Metro Line 3 Phase ii Project has achieved an intelligent power distribution system that combines virtual and reality in the lighting distribution room of domestic rail transit. In the field of view of the helmet worn by a person, there is an image of a real-world power distribution box, and virtual objects are overlaid on top of the image. The overlaid objects can interact with the real-world power distribution box scene in an immersive manner. This article mainly elaborates on the implementation of the metaverse intelligent power distribution system. © 2024 SPIE.

关键词： Photons

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Moving Beyond the Drawing Notation of ISO 10110

Moving Beyond the Drawing Notation of ISO 10110

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International optical design conference 2023

作者： Aikens, Dave Herman, Eric Youngworth, Richard N. Savvy Optics Corp. 35 Gilbert Hill Road ChesterCT06412 United States Synopsys Inc. 199 South Los Robles Avenue PasadenaCA91101 United States Riyo LLC PO Box 2325 BoiseID83701 United States

By adopting ISO 10110, the benefits of moving towards ISO standards for other affiliated specifications of coatings, environment, system performance and metrology becomes advantageous. A guide to this broader web of I... 详细信息

ISBN: (数字)9781510668515

ISBN: (纸本)9781510668508

关键词： optical design

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CPONoC: Critical Path-aware Physical Implementation for optical Networks-on-Chip 25

CPONoC: Critical Path-aware Physical Implementation for Opti...

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30th Asia and South Pacific design Automation conference, ASP-DAC 2025

作者： Chen, Yan-Ting Zheng, Zhidan Fang, Shao-Yun Tseng, Tsun-Ming Schlichtmann, Ulf Department of Electrical Engineering National Taiwan University of Science and Technology Taipei Taiwan Department of Electronic Design Automation Technical University of Munich Munich Germany

ISBN: (纸本)9798400706356

optical networks-on-chips (ONoCs), which adopt optical waveguides, microring resonators (MRRs), and the wavelength division multiplexing (WDM) scheme to transmit optical signals, serve as promising solutions for integrating multi- and many-core systems to provide high-bandwidth, low-latency, and low-power on-chip communication. To minimize the insertion loss of a wavelength-routed ONoC (WRONoC) during physical implementation, existing studies either adopt conventional standard cell placement techniques or maximally avoid waveguide crossings;however, all of them ignore the fact that the critical path suffering from the maximum insertion loss dominates the overall power efficiency and system performance. In this work, we propose CPONoC, a critical-path-aware physical implementation tool for WRONoCs. Different from existing studies, CPONoC focuses on minimizing the insertion loss of the critical path using an iterative crossing-aware force-directed method, and it is compatible with different representative logic schemes and input configurations. Compared to the state-of-the-art design automation tools, CPONoC achieves an average reduction of 9.6% in maximum insertion loss. © 2025 Copyright is held by the owner/author(s). Publication rights licensed to ACM.

关键词： Insertion losses

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design of laser assisted heating 3D printing control system 4

Design of laser assisted heating 3D printing control system

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4th International conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2024

作者： Dai, Yingying Sang, Shuguang Zhou, Yihua Yu, Zhongxing Ouyang, Hanqing Zhang, Lu Zhang, Yue University of Jinan Shandong Jinan China

ISBN: (数字)9781510679887

ISBN: (纸本)9781510679870

Using traditional FDM 3D printing manufacturing, the mechanical properties of formed components are limited and difficult to apply in engineering projects with high load requirements. However, combining laser assisted heating with traditional FDM 3D printing technology provides new ideas for solving the above problems. This article addresses the shortcomings of traditional FDM 3D printing control technology and laser temperature control, and redesigns the control system of the 3D printer, mainly including the design of temperature control module and motion control module, to achieve intelligent control. © 2024 SPIE.

关键词： Control systems

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Decoupling isolator inspired by conformal metasurface for significant MRI enhancement 15

Decoupling isolator inspired by conformal metasurface for si...

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15th International conference on Information Optics and Photonics, CIOP 2024

作者： Ren, Qun Lang, Yuxin Ooi, Zher Yian Zhang, Yaoyin Sun, Haoyang Pang, Yanwei School of Electrical and Information Engineering Tianjin University Tianjin300072 China

ISBN: (数字)9781510686175

ISBN: (纸本)9781510686168

The integration of surface coils and metamaterials presents a promising approach for enhancing the performance of magnetic resonance imaging (MRI) systems. This combination offers substantial benefits in terms of local staging flexibility, allowing for improved imaging capabilities in specific region of interest. However, due to the coupling between the two, low signal-to-noise ratio (SNR) and low contrast resolution further prevent the future development of clinical MRI. In this paper, we propose a conformal metasurface decoupling isolator for magnetic field enhancement in 1.5T surface coil MRI systems. We use conformal optical theory and polarization conversion mechanisms to eliminate the coupling between metamaterial and radio frequency surface coil. In addition, the conformal theory can be applied to the analysis of any surface boundary condition, providing an effective method for the design of magnetic resonance metamaterials. Through conformal optical analysis, portable metasurface designs can be achieved, opening up a promising avenue for easy-to-use surface-coil MRI scanners. © 2024 SPIE.

关键词： Signal to noise ratio

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