Double optical gating of high-harmonic generation was used to obtain supercontinuous spectra in the extreme UV (XUV) region including the water window. The spectra supported a pulse duration that is below one atomic unit of time . The dependence of the gated spectra on the carrier-envelope phase of the laser provided evidence that isolated attosecond pulses were generated. In addition, to ensure the temporal coherence of the XUV light, the pulse shape and phase of isolated XUV pulses using a portion of the spectrum were characterized by attosecond streaking.
© 2009 Optical Society of AmericaFull Article | PDF Article
I. Thomann, A. Bahabad, X. Liu, R. Trebino, M. M. Murnane, and H. C. Kapteyn
Opt. Express 17(6) 4611-4633 (2009)
E. Skantzakis, P. Tzallas, J. Kruse, C. Kalpouzos, and D. Charalambidis
Opt. Lett. 34(11) 1732-1734 (2009)
Ximao Feng, Steve Gilbertson, Sabih D. Khan, Michael Chini, Yi Wu, Kevin Carnes, and Zenghu Chang
Opt. Express 18(2) 1316-1322 (2010)