KTiOPO_(4)晶体和光参量振荡技术产生900 nm波段激光  

900 nm wavelength laser based on KTiOPO_(4)optical parametric oscillation

作　　者：周权 赵鑫强 孔辉 卞进田 徐海萍 舒涵 邹杰瑞 谢运涛 Zhou Quan;Zhao Xinqiang;Kong Hui;Bian Jintian;Xu Haiping;Shu Han;Zou Jierui;Xie Yuntao(State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei 230037,China;Advanced Laser Technology Laboratory of Anhui Province,Hefei 230037,China)

机构地区：[1]国防科技大学脉冲功率激光技术国家重点实验室,安徽合肥230037 [2]先进激光技术安徽省实验室,安徽合肥230037

出　　处：《红外与激光工程》2024年第5期57-63,共7页Infrared and Laser Engineering

基　　金：国防科技大学自主科学创新基金项目(23-ZZCX-JDZ-44);脉冲功率激光技术国家重点实验室主任基金项目(SKL2022ZR03)。

摘　　要：利用KTiOPO_(4)(简称KTP)晶体和光参量振荡技术(Optical Parametric Oscillator,OPO),产生900 nm波段激光。利用成熟的1064 nm激光,通过LiB_(3)O_(5)(LBO)晶体倍频产生532 nm激光,再用532 nm激光泵浦KTP OPO产生调谐范围为898~911 nm,调谐分辨率优于1 nm,输出能量达1.85 mJ,重频1~10 Hz的近红外激光。利用该方案产生的900 nm波段激光,具有全固化、小型化、宽调谐、高调谐分辨率、高光束质量等优势,在光电对抗领域有着广泛的应用前景。The 900 nm laser based on a KTiOPO_(4)(KTP)optical parametric oscillator(OPO)was demonstrated for the first time.The 532 nm laser was produced from a LiB_(3)O_(5)(LBO)pumped by 1064 nm laser.The wavelength tuning range of 898-911 nm,tuning resolution better than 1 nm,output energy of 1.85 mJ,and repetition rate of 1-10 Hz was obtained,which can be applied to optoelectronic countermeasures for its solidification,miniaturization,wide tuning,high tuning resolution,and high beam quality.Objective The spectral response of a 900 nm wavelength laser on a silicon detector is better than that of 1064 nm,and it is located at the transition absorption line of atoms,ions,etc.It can also generate blue light laser with frequency doubling.Therefore,it can be widely applied in fields such as optoelectronic guidance,atmospheric detection,and deep-sea communication.Currently,semiconductor lasers commonly used to generate 900 nm wavelength bands have a low tuning range and are difficult to output high-energy pulses.The optical system of titanium sapphire laser is relatively complex,and it is difficult to achieve miniaturization and lightweight,and the tuning speed is slow.Nd^(3+)doped solid-state lasers are difficult to achieve wavelength tuning output and are prone to energy level competition.We need a suitable crystal and technology to solve the above problems and achieve better optical performance of 900 nm laser output.Optical Parametric Oscillator(OPO)can convert mature 1064 nm laser into ultraviolet,visible,near-infrared,mid to far infrared laser bands,and has advantages such as solid-state design,miniaturization,high efficiency,high beam quality,and wide tunable output wavelength.The use of high damage threshold KTiOPO_(4)(KTP)and OPO can achieve high conversion efficiency,wide tuning range,and high tuning resolution of 900 nm laser output.Method A tunable 900 nm wavelength laser based on KTP OPO has been built(Fig.2).We chose LBO frequency doubling crystal to double the 1064 nm laser output from Nd:YAG laser to 532 nm and u

关 键 词：KTiOPO_(4) 光参量振荡 900 nm波段激光 高可调谐分辨率 

分 类 号：TN244[电子电信—物理电子学]