摘要
建立了小型适用的外电光采样系统，利用增益开关半导体激光器产生的皮秒超短光脉冲做为取样门，以ＬｉＴａＯ_３电光探头作为电场传感器，实现了对梳状波电脉冲波形的光学采样测量，测量结果与用采样示波器测量的结果相符．分析了系统的主要性能，获得了 ２５ｐｓ的时间分辨率及２０ｍＶ／（Ｈｚ）^（１／２）的电压灵敏度．实验分析了电光探头对系统测量精度的影响．同时用该系统测量了共面微带传输线的传输特性．
A external electro-optic sampling system utilizing gain-switched laser diode is reported. Comb pulses were measured utilizing ultrashort optical pulses as'sampling gate'via the Pockels effect in LiTaO_3 probe. A comparison with Tektronix sampling oscilloscope demonstrated good agreement and this system has 2 5 ps temporal resolution and 2 0 mV / (Hz)^(1/2) sensitivity. The accuracy and invasiveness of LiTaO_3, probe is investigated. The dispersion of coplanar stripline is characterized by this system.
出处
《光子学报》
EI
CAS
CSCD
1997年第3期208-213,共6页
Acta Photonica Sinica
基金
国家科委攀登计划一飞秒激光技术和超快过程研究资助
