ABSTRACT In this study, a compact fiber-optic laser-induced breakdown spectroscopy (LIBS) system was developed using a microchip laser (MCL) with a monolithic Nd:YAG/Cr:YAG composite ceramic, for remote analysis of hazardous environments, such as nuclear reactor cores. Short duration laser pulses exhibiting a near-Gaussian beam profile were obtained. The output properties of the laser, such as pulse energy, repetition rate, temporal shape, and beam profile, were measured in view of their applicability to LIBS analysis and were found suitable for the purpose of this research. Spectra of zirconium metal were obtained, and signal intensity was further enhanced by applying multi-burst mode irradiation to the target. The results of this study reveal that the fiber-optic microchip-laser induced breakdown spectroscopy system is advantageous for efficient remote analysis of hazardous environments and is suitable for analyzing the inside of nuclear reactor cores.

中文翻译：

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使用陶瓷微激光器开发用于光纤远程分析的激光诱导击穿光谱系统

摘要 在这项研究中，使用具有单片 Nd:YAG/Cr:YAG 复合陶瓷的微芯片激光器 (MCL) 开发了一种紧凑型光纤激光诱导击穿光谱 (LIBS) 系统，用于远程分析危险环境，例如核反应堆堆芯。获得了呈现近高斯光束轮廓的短持续时间激光脉冲。激光的输出特性，如脉冲能量、重复率、时间形状和光束轮廓，根据它们对 LIBS 分析的适用性进行了测量，并被发现适合本研究的目的。获得了锆金属的光谱，并通过对目标应用多脉冲模式辐照进一步增强了信号强度。