中红外Fe∶ZnSe连续及温度调谐激光性能研究  

Performance of Mid⁃Infrared Fe∶ZnSe Continuous and Temperature⁃Tuned Lasers

作　　者：沈吉 冯飞 马杰[1] 刘鹏[1] 王俊[1] 覃治鹏 谢国强[3] 沈德元[1] 唐定远 Shen Ji;Feng Fei;Ma Jie;Liu Peng;Wang Jun;Qin Zhipeng;Xie Guoqiang;Shen Deyuan;Tang Dingyuan(Jiangsu Key Laboratory of Advanced Laser Materials and Devices,Jiangsu Normal University,Xuzhou 221116,Jiangsu,China;Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China;Key Laboratory for Laser Plasmas(Ministry of Education),Shanghai Jiao Tong University,Shanghai 200240,China;Future Technology School,Shenzhen Technology University,Shenzhen 518118,Guangdong,China)

机构地区：[1]江苏师范大学江苏省先进激光材料与器件重点实验室,江苏徐州221116 [2]北京跟踪与通信技术研究所,北京100094 [3]上海交通大学激光等离子体教育部重点实验室,上海200240 [4]深圳技术大学未来技术学院,广东深圳518118

出　　处：《中国激光》2024年第17期123-129,共7页Chinese Journal of Lasers

基　　金：国家重点研发计划(2022YFB3605800);国家自然科学基金(62075089,62105130);广东省科研提升项目(2022ZDJS116)。

摘　　要：宽带可调谐中红外光源在生物医疗、环境监测等众多领域中有着广阔的应用前景。报道了利用自制的Er∶Y_(2)O_(3)陶瓷激光器端面泵浦Fe∶ZnSe晶体,实现连续及基于温度调控的3~5μm波段中红外调谐激光输出。在103 K低温制冷条件下,获得了平均功率为352 m W、中心波长为4170 nm的连续中红外激光。进一步研究了基于温度调控的Fe∶ZnSe激光器的光谱调谐性能,成功实现了383 nm(4170~4553 nm)带宽的连续调谐中红外激光输出。Objective Continuous and wide-tunable laser sources in the mid-infrared range of 3-5μm have attracted significant attention in fields such as spectral analysis,remote sensing,medical treatment,environmental monitoring,and optoelectronic countermeasures.Currently,the primary approach to achieve broadly tunable lasers in this wavelength range is nonlinear frequency conversion methods such as those using optical parametric oscillators(OPOs)and optical parametric amplifiers(OPAs).These methods have advantages,such as a wide tuning range and technological maturity.However,they typically require high-performance near-infrared pulsed lasers or narrow-linewidth lasers as pump sources,leading to challenges such as an extensive system volume,relatively complex resonators,low optical conversion efficiency,and high costs.In recent years,increasing attention has been paid to schemes that directly generate tunable mid-infrared lasers,including semiconductor quantum cascade lasers and mid-infrared oscillators based on mid-infrared laser gain media.Among them,the Fe∶ZnSe crystal exhibits broad absorption and emission spectra,large absorption and emission cross-sections,as well as low phonon energy,making it one of the best candidate materials for directly generating broadly tunable mid-infrared laser sources in the 3-5μm spectral range.Since the first Fe∶ZnSe mid-infrared laser was reported by Adams et al.in 1999,many studies have been conducted on Fe∶ZnSe lasers.However,stable continuous-wave(CW)and wavelength-tunable Fe∶ZnSe lasers have seldom been domestically reported beyond 4μm in the mid-infrared wavelength.In this study,pumped by a homemade Er∶Y_(2)O_(3)ceramic laser,CW and wideband tunable Fe∶ZnSe lasers are demonstrated in the 3-5μm spectral range.Methods According to the Füchtbauer-Ladenburg(F-L)equation,the emission cross-section of a Fe∶ZnSe crystal is influenced by its fluorescence spectrum and spontaneous emission lifetime.Moreover,it has been demonstrated that there is a noticeable redshift in t

关 键 词：固体激光器 中红外激光器 Fe∶ZnSe 可调谐激光器 

分 类 号：TN248.1[电子电信—物理电子学]