Picosecond time delay fluorimetry using a jitter-free streak camera
Picosecond time delay fluorimetry using a jitter-free streak camera
复制标题
使用无抖动条纹相机进行皮秒时间延迟荧光测定
DOI：
10.1016/0030-4018(80)90403-4
复制
发表时间：
1980
影响因子：
2.4
通讯作者：
W. Knox
中科院分区：
文献类型：
--
作者：
M. Stavola;G. Mourou;W. Knox
采用激光驱动低温硅开关驱动皮秒级条纹相机，用脉冲荧光法测量了孔雀石绿色在水中的衰减时间。条纹相机的单次拍摄定时精度（几ps）对应于光脉冲宽度的10%。该系统的整体稳定性允许在没有图像平移的情况下对数百个激光发射进行平均，从而提高了测量的信噪比和定时精度。由拍摄平均提供的亚皮秒的定时精度使我们能够测量2ps的荧光衰减时间为低量子产率的样品与20 ps的激发脉冲。
A streak camera driven with picosecond accuracy by a laser-activated cryogenic Si-switch has been used to measure the decay time of malachite green in water by a pulse fluorimetry technique. The single shot timing accuracy of the streak camera (a few ps) corresponds to ∼10% of the optical pulsewidth. The overall stability of the system allows the averaging of hundreds of laser shots without image translation improving both the signal to noise ratio and timing accuracy of the measurements.. The subpicosecond timing accuracy afforded by shot averaging has enabled us to measure a 2 ps fluorescence decay time for a low quantum yield sample with a 20 ps excitation pulse.