Geometrical Issues: Single-shot FROG
Geometrical Issues: Single-shot FROG
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几何问题：单次 FROG
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
R. Trebino
中科院分区：
文献类型：
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作者：
R. Trebino
在我们刚刚讨论的所有 FROG 光束几何结构中，相对延迟通过扫描反射镜位置而变化。由于一次只能设置一个延迟值，因此一次只能获取一张频谱。因此，为了产生 FROG 迹线，这些方法需要在至少与所需延迟值数量一样多的激光脉冲上测量光谱。如果我们对每个延迟平均超过一个脉冲，则更多。但是，如果您刚刚将脉冲放大到焦耳，并且重复频率为每小时一个脉冲，并且您只是不想等待一两天，然后用这种多次射击方法来测量它，该怎么办？
In all the FROG beam geometries we’ve just discussed, the relative delay is varied by scanning a mirror position. Because only one value of the delay can be set at a time, only one spectrum can be taken at a time. As a result, to produce a FROG trace, these methods require measuring spectra over at least as many laser pulses as the desired number of delay values. More, if we average over more than one pulse for each delay. But what if you’ve just amplified your pulse up to a Joule, and the rep rate is one pulse per hour, and you just don’t feel like waiting around for the day or two it’ll take to measure it with such a multi-shot method?