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Eye-safe diamond Raman laser

机译：眼安全钻石拉曼激光

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摘要

Stimulated Raman scattering, as a third-order nonlinear effect, is an effective approach to expand the laser spectral region. To obtain a high power output of a Raman laser with a specific wavelength, novel Raman gain media and laser structures have been continuously studied, and in recent years, diamonds have received an increased interest from researchers owing to their extremely high Raman gain coefficient, high thermal conductivity, and wide transmission spectrum. Diamond Raman lasers (DRLs) have enabled the achievement of a laser input in the visible to the mid-infrared band. In particular, lasers with outputs in the 1.5?μm band have the characteristics of an atmospheric window and being eye-safe, which are critical for applications in the medical, distance measurement, radar, and other such domains. Consequently, researchers are constantly improving the methods to output a higher power laser at 1.5?μm, and the DRLs offer the potential to realize a high power and high beam quality in this band. This paper provides a review of the research status of eye-safe DRLs and suggests opportunities for future development and applications.
机译：刺激拉曼散射作为三阶非线性效应，是扩展激光光谱区域的有效方法。为了获得具有特定波长的拉曼激光器的高功率输出，新颖的拉曼增益介质和激光结构已被连续研究，近年来，由于其极高的拉曼增益系数，钻石已经从研究人员获得了增加的兴趣导热系数和宽传输光谱。金刚石拉曼激光器（DRL）使得在中红外频带的可见中实现了激光输入。特别地，具有1.5Ω·μm频带输出的激光器具有大气窗口的特点，并对眼睛安全，这对于医疗，距离测量，雷达和其他域的应用至关重要。因此，研究人员正在不断改进输出更高功率激光器的方法1.5？μm，并且DRL提供了在该频段中实现高功率和高光束质量的可能性。本文对眼睛安全DRL的研究状况提供了审查，并为未来的发展和应用程序提出了机会。

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