中国光学十大进展:电子-声子耦合效应与激光波长拓展  

China’s Top 10 Optical Breakthroughs:Electron-Phonon Coupling Effect and Laser Wavelength Extension

作　　者：梁飞 何程 陈延峰[2] 于浩海[1] 张怀金[1] Liang Fei;He Cheng;Chen Yanfeng;Yu Haohai;Zhang Huaijin(State Key Laboratory of Crystal Materials,Shandong University,Jinan,250100,Shandong,China;National Laboratory of Solid State Microstructures,Nanjing University,Nanjing,210093,Jiangsu,China)

机构地区：[1]山东大学晶体材料国家重点实验室,山东济南250100 [2]南京大学固体微结构物理国家重点实验室,江苏南京210093

出　　处：《激光与光电子学进展》2023年第23期1-11,共11页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2021YFB3601504,2021YFA0717800);国家自然科学基金(52025021,92163207,51890863)。

摘　　要：电子-声子耦合效应是拓展固体激光波长的基本原理之一。本文梳理了固体激光发展的历史,以电子-声子耦合导致的荧光展宽和可调谐激光器为主线,总结了色心激光晶体、过渡金属激光晶体、稀土激光晶体三类典型固体激光材料的发展历程和研究现状。近年来,基于多声子耦合机制的稀土激光晶体迅速发展,首次实现了突破荧光光谱的激光输出,极大地拓展了激光波长范围,为全固态可调谐激光器设计提供了新方案。同时,基于功能复合与交互作用规律,研制了一系列低成本、高集成的多声子耦合自倍频激光器,波长覆盖了青-绿-黄-橙-红光波段,满足了激光显示、激光医疗等领域的重要急需,对全固态激光技术的发展具有重要意义。Electron-phonon coupling effect is an important physical phenomenon for laser wavelength extension in solidstate laser materials.This review summarized the history of tunable solid-state lasers,namely,color-center,transitionmetal,and rare-earth lasers,focusing on the spectral homogeneous broadening induced by the electron-phonon coupling effect.Recently,based on the multiphonon-coupling theory,an ultrabroadband laser emission far beyond the fluorescence spectrum was reported,thus greatly extending the available laser wavelengths.Moreover,various self-frequency doubling lasers were developed by combining the multiphonon-coupling and nonlinear-optical-conversion into one single crystal,thereby creating some low-cost and compact visible laser modules,covering the cyan-green-yellow-orange-red spectral range.These newly developed laser sources can meet the urgent demand of laser-based surgery and laser display applications,which can push and promote the rapid development of the all-solid-state laser technology.

关 键 词：激光 荧光 声子 电子跃迁 电子-声子耦合 

分 类 号：O436[机械工程—光学工程]