Spatially coherent, phase matched, high-order harmonic EUV beams at 50 kHz
Spatially coherent, phase matched, high-order harmonic EUV beams at 50 kHz
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DOI：
10.1364/oe.17.017376
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发表时间：
2009-09-28
期刊：
影响因子：
3.8
通讯作者：
Murnane, M. M.
中科院分区：
文献类型：
--
作者：
Chen, M. -C.;Gerrity, M. R.;Murnane, M. M.
通过使用紧聚焦几何结构聚焦高重复率 (50kHz)、紧凑型、低脉冲能量 (25 muJ) 的飞秒激光系统，我们首次在非常高的重复率下演示了完全相位匹配的高次谐波生成，从而产生具有完全空间相干性的 EUV 光。其结果是一种实用的单箱相干光源，可用于计量、超快光谱、成像和显微镜等领域。通过增加激光脉冲能量和/或重复率可以进一步改善软X射线通量。 (C) 2009 美国光学学会
By focusing a high repetition rate (50kHz), compact, femtosecond laser system with low pulse energy (25 mu J) using a tight-focusing geometry, we demonstrate fully phase matched high-order harmonic generation for the first time at very high repetition rates, resulting in EUV light with full spatial coherence. The result is a practical, single-box, coherent source useful for applications in metrology, ultrafast spectroscopy, imaging and microscopy. The soft x-ray flux can be improved further by increasing the laser pulse energy and/or repetition rate. (C) 2009 Optical Society of America