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作 者:张振 苏良碧[1,2] ZHANG Zhen;SU Liangbi(Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China)
机构地区:[1]中国科学院上海硅酸盐研究所,上海200050 [2]中国科学院大学材料科学与光电技术学院,北京100049
出 处:《人工晶体学报》2020年第8期1361-1368,共8页Journal of Synthetic Crystals
基 金:国家杰出青年科学基金(61925508)。
摘 要:Er^3+近3μm激光是高精度激光手术的理想光源,此外其本身可作为中远红外激光系统的泵浦源,对长波激光的发展具有重要价值。研究表明,Er离子间的合作上转换能够抑制激光下能级寿命过长引起的粒子阻塞,显著提高激光效率。据此提出的“高浓度掺杂”方案造成了增益晶体严重的热效应,限制了激光功率提升。本文简要总结了关于掺Er^3+晶体激光自终止和合作上转换的研究成果,介绍了目前实现高功率近3μm激光的实验方案及其研究进展,对高功率Er^3+近3μm激光的发展进行了展望。The Er^3+based near 3μm laser is an ideal light source for precise laser surgery.In addition,it can be used as pump source for the mid-and far-infrared laser system,which is of great value for the development of long-wave lasers.Research shows that the cooperative up-conversion between Er ions can suppress the population bottleneck caused by the long lifetime of the laser lower energy level,which significantly improves the laser efficiency.However,the proposed“high concentration doping”scheme cause heavy thermal loads on the gain crystals,which limites the enhancement of laser power.This paper briefly summarizes the research results on the self-termination and cooperative up-conversion of Er^3+-doped crystal lasers,and introduces the current experimental schemes and research progress to achieve high-power lasers near 3μm.Finally,the development of high-power Er^3+based near 3μm laser is prospected.
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