The use of low-coherence light is expected to be one of the effective ways to suppress or even eliminate the laser–plasma instabilities that arise in attempts to achieve inertial confinement fusion. In this paper, a review of low-coherence high-power laser drivers and related key techniques is first presented. Work at typical low-coherence laser facilities, including Gekko XII, PHEBUS, Pharos III, and Kanal-2 is described. The many key techniques that are used in the research and development of low-coherence laser drivers are described and analyzed, including low-coherence source generation, amplification, harmonic conversion, and beam smoothing of low-coherence light. Then, recent progress achieved by our group in research on a broadband low-coherence laser driver is presented. During the development of our low-coherence high-power laser facility, we have proposed and implemented many key techniques for working with low-coherence light, including source generation, efficient amplification and propagation, harmonic conversion, beam smoothing, and precise beam control. Based on a series of technological breakthroughs, a kilojoule low-coherence laser driver named Kunwu with a coherence time of only 300 fs has been built, and the first round of physical experiments has been completed. This high-power laser facility provides not only a demonstration and verification platform for key techniques and system integration of a low-coherence laser driver, but also a new type of experimental platform for research into, for example, high-energy-density physics and, in particular, laser–plasma interactions.

中文翻译：

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用于惯性约束聚变的低相干高功率激光驱动器的开发

低相干光的使用有望成为抑制甚至消除试图实现惯性约束聚变时出现的激光-等离子体不稳定性的有效方法之一。在本文中，首先介绍了低相干高功率激光驱动器和相关关键技术的综述。描述了在典型的低相干激光设施上的工作，包括 Gekko XII、PHEBUS、Pharos III 和 Kanal-2。描述和分析了在低相干激光驱动器的研究和开发中使用的许多关键技术，包括低相干光源的产生、放大、谐波转换和低相干光的光束平滑。然后，介绍了我组在宽带低相干激光驱动器研究方面取得的最新进展。在我们开发低相干高功率激光设备的过程中，我们提出并实施了许多处理低相干光的关键技术，包括光源生成、高效放大和传播、谐波转换、光束平滑和精确光束控制。基于一系列技术突破，研制了相干时间仅为300fs的千焦低相干激光驱动器Kunwu，并完成了第一轮物理实验。该高功率激光装置不仅为低相干激光驱动器的关键技术和系统集成提供了示范和验证平台，而且为研究高能量密度物理和，特别是激光-等离子体相互作用。包括源生成、高效放大和传播、谐波转换、光束平滑和精确的光束控制。基于一系列技术突破，研制了相干时间仅为300fs的千焦低相干激光驱动器Kunwu，并完成了第一轮物理实验。该高功率激光装置不仅为低相干激光驱动器的关键技术和系统集成提供了示范和验证平台，而且为研究高能量密度物理和，特别是激光-等离子体相互作用。包括源生成、高效放大和传播、谐波转换、光束平滑和精确的光束控制。基于一系列技术突破，研制了相干时间仅为300fs的千焦低相干激光驱动器Kunwu，并完成了第一轮物理实验。该高功率激光装置不仅为低相干激光驱动器的关键技术和系统集成提供了示范和验证平台，而且为研究高能量密度物理和，特别是激光-等离子体相互作用。研制了相干时间仅为300fs的Kunwu千焦低相干激光驱动器，并完成了第一轮物理实验。该高功率激光装置不仅为低相干激光驱动器的关键技术和系统集成提供了示范和验证平台，而且为研究高能量密度物理和，特别是激光-等离子体相互作用。研制了相干时间仅为300fs的Kunwu千焦低相干激光驱动器，并完成了第一轮物理实验。该高功率激光设施不仅为低相干激光驱动器的关键技术和系统集成提供了示范和验证平台，而且为研究高能量密度物理和，特别是激光-等离子体相互作用。