Kovacev M, Fomichev S V, Priori E, Mairesse Y, Merdji H, Monchicourt P, Breger P, Norin J, Persson A, L'Huillier A, Wahlström C-G, Carré B, Salières P
CEA/DSM/DRECAM/SPAM, bât. 522, Centre d'Etudes de Saclay, 91191 Gif-sur-Yvette, France.
Phys Rev Lett. 2005 Nov 25;95(22):223903. doi: 10.1103/PhysRevLett.95.223903. Epub 2005 Nov 23.
We demonstrate a new scheme for extreme ultraviolet (xuv) Fourier-transform spectroscopy based on the generation of two phase-locked high-harmonic beams. It allows us to measure for the first time interferograms at wavelengths as short as 90 nm, and open the perspective of performing high-resolution Fourier-transform absorption spectroscopy in the xuv. Our measurements also demonstrate that a precise control of the relative phase of harmonic pulses can be obtained with an accuracy on an attosecond time scale, of importance for future xuv pump-xuv probe attosecond spectroscopy.
我们展示了一种基于产生两个锁相高次谐波光束的极紫外（XUV）傅里叶变换光谱新方案。它使我们首次能够在短至90纳米的波长下测量干涉图，并开启了在极紫外波段进行高分辨率傅里叶变换吸收光谱的前景。我们的测量还表明，可以在阿秒时间尺度上精确控制谐波脉冲的相对相位，这对于未来的极紫外泵浦-极紫外探测阿秒光谱学具有重要意义。
