Optimised XUV holography using spatially shaped high harmonic beams.
Optimised XUV holography using spatially shaped high harmonic beams.
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DOI：
10.1364/oe.27.029016
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发表时间：
2019-09
期刊：
影响因子：
3.8
通讯作者：
D. Treacher;D. T. Lloyd;Florian Wiegandt;K. O’Keeffe;S. Hooker
中科院分区：
文献类型：
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作者：
D. Treacher;D. T. Lloyd;Florian Wiegandt;K. O’Keeffe;S. Hooker
提出了一种控制多束高次谐波光束横向位置和相对功率的新方法。相位空间光调制器用于产生多个红外焦点，其位置和强度可以可编程地控制，从而能够产生和控制多个HHG光束。为了证明这种方法的实用性，我们执行傅里叶变换全息术的对象和参考针孔的单独照明的一对HHG光束，这使得最佳地利用可用的光子通量。这里展示的HHG光束的空间分布的可编程控制为极紫外（XUV）波长的实验提供了新的机会，特别是对于光子密集型应用，如成像。
We present a novel method for controlling the transverse positions and relative powers of multiple high-order harmonic beams. A phase-only spatial light modulator is used to produce multiple infrared foci, the positions and intensities of which can be controlled programmably, enabling the generation and control of multiple HHG beams. To demonstrate the utility of this method we perform Fourier transform holography with separate illumination of the object and reference pinhole by a pair of HHG beams, which makes optimal use of the available photon flux. The programmable control of the spatial distribution of HHG beams demonstrated here offers new opportunities for experiments at extreme ultraviolet (XUV) wavelengths, particularly for photon intensive applications such as imaging.