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如何有效地减少抽运过程和激光发射过程中激光介质内产生的热量,是全固态高功率激光研究过程中所面临的主要难题之一。与传统波长的抽运方式相比,采用长波长的直接抽运技术不但可使激光介质中产生的热量减少30%～50%,而且还可显著改善激光的输出特性。以最常用的Nd3+激光器的研究作为切入点,简述了直接抽运技术的研究发展,介绍了直接抽运技术相对于传统抽运技术的优缺点以及目前的研究现状,最后对未来的发展前景作了初步分析和展望。
How to effectively reduce the heat generated in the laser medium during pumping and laser emission is one of the major challenges in the research of all-solid-state high-power laser. Compared with the pumping method of the traditional wavelength, the long-wavelength direct pumping technology can not only reduce the heat generated in the laser medium by 30% -50%, but also significantly improve the output characteristics of the laser. The most commonly used Nd3 + laser research as a starting point, briefly described the development of direct pumping technology, introduced the advantages and disadvantages of direct pumping technology compared to the traditional pumping technology and the current research status, and finally the future development prospects Made a preliminary analysis and forecast.