摘要
准分子激光放大技术可将固体掺钛蓝宝石飞秒激光器通过频率转换后得到的小能量深紫外飞秒脉冲放大为大能量深紫外飞秒脉冲。为了满足准分子激光器与固体飞秒激光器之间同步工作的需要,设计了一种准分子激光低抖动延时同步系统。该系统采用现场可编程门阵列(FPGA)数字延时和可编程延时芯片延时相结合的方法,利用时间测量芯片实现对延时时间的闭环控制从而提高系统延时的稳定性,最终实现对外触发脉冲信号的精确延时。验证实验表明,该系统在1∼100 Hz频率下运行稳定,输出触发脉冲信号延时范围为56 ns∼2.4µs,理论延时步进为10 ps,抖动在±1 ns内,完全满足飞秒激光器与准分子激光器同步工作的需要。
Excimer laser amplification technology can amplify the low-energy deep ultraviolet femtosecond pulse obtained by solid Ti:Sapphire femtosecond laser through frequency conversion into the high-energy deep ultraviolet femtosecond pulse.In order to meet the requirement of synchronization between excimer laser and femtosecond laser,a time-delay synchronization system with low jtter for excimer laser has been designed.The system adopts the method that combines field programmable gate array(FPGA)digital delay and programmable delay chip delay,uses the time measurement chip to achieve the closed-loop control of delay time to improve the stability of the system's delay output,and finally realize the accurate delay of external trigger pulse signal.The verification experiments show that the system operates stably at 1-100 Hz frequency,the delay time range of output pulse signal is 56 ns-2.2μs,the theoretical delay step is 10 ps,and the jtter is less than±1 ns,which fully meets the requirement of sy nchronization between femtosecond laser and excimer laser.
作者
胡泽雄
游利兵
寸超
王宏伟
范军
王琪
张艳琳
方晓东
HU Zexiong;YOU Libing;CUN Chao;WANG Hongwei;FAN Jun;WANG Qi;ZHANG Yanlin;FANG Xiaodong(School of Environmental Science and Optoelectronic Technology,University of Science and Technology of China,Hefei 230026,China;Anhui Province Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;College of New Materials and New Energies,Shenzhen Technology University,Shenzhen 518118,China;School of Electronic Science and Applied Physics,Hefei University of Technology,Hefei 230009,China;Shenzhen Shengfang Technology Company Ltd.,Shenzhen 518173,China)
出处
《量子电子学报》
CAS
CSCD
北大核心
2023年第1期69-78,共10页
Chinese Journal of Quantum Electronics
基金
国家自然科学基金(41627803)
安徽省重点研究和开发计划项目(1804a0802219)
深圳市科技计划资助项目(KQTD20170331115422184)
中国科学院核心关键技术攻关项目(ZKYXG-2018-04)。
关键词
激光技术
延时
低抖动
同步
现场可编程门阵列
时间测量
laser technology
delay
low jtter
synchronization
fie Id programmable gate array
time measurement
