摘要
用蓝色光二极管双光子跃迁光电流信号测量掺钛蓝宝石飞秒激光脉冲宽度,实验高精度地记录了二阶干涉自相关曲线及其精细结构。由于用蓝色光二极管双光子跃迁代替了常用的二次谐波,而且光信号直接转化为电信号,从而使飞秒激光脉冲宽度的测量大为简化。
The characterization of femtosecond optical pulses for Ti∶sapphire laser output is conducted with two photon induced transitions in blue light emitting diodes. Excellent phase relationship between the two separated pulses are recorded from the fringes of the two photon induced, second order correlation function. It is demonstrated that the two photon induced current can greatly simplify the femtosecond pulse characterization by direct converting the photon signal to current signal.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1998年第9期1278-1280,共3页
Acta Optica Sinica
基金
国家自然科学基金
广东省自然科学基金
国家教委跨世纪优秀人才基金
关键词
二阶干涉自相关
飞秒
激光脉冲
光二极管
测量
second order interferometric autocorrelation, femtoscond optical pulses, light emitting diodes.