Transmission grating stretcher for contrast enhancement of high power lasers.
Transmission grating stretcher for contrast enhancement of high power lasers.
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用于增强高功率激光器对比度的透射光栅展宽器。
DOI：
10.1364/oe.22.029363
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发表时间：
2014
期刊：
影响因子：
3.8
通讯作者：
P. Rajeev
中科院分区：
文献类型：
--
作者：
Yunxin Tang;C. Hooker;O. Chekhlov;S. Hawkes;J. Collier;P. Rajeev
我们首次提出了一种用于高功率激光器的透射式光栅展宽器，并证明了它在脉冲时间质量方面优于传统的反射式金光栅展宽器。结果表明，与具有相同展宽因子的传统展宽器相比，基于透射式光栅的展宽器在对比度基座上产生了超过一个数量级的改善。我们还定量地表征了光栅表面的粗糙度，并估计了其对对比度基座的影响。
We propose, for the first time, a transmission grating stretcher for high power lasers and demonstrate its superiority over conventional, reflective gold grating stretchers in terms of pulse temporal quality. We show that, compared to a conventional stretcher with the same stretching factor, the transmission-grating based stretcher yields more than an order of magnitude improvement in the contrast pedestal. We have also quantitatively characterized the roughness of the grating surfaces and estimated its impact on the contrast pedestal.