Phys. Rev. Lett. 79, 2967–2970 (1997)Generation of Coherent Soft X Rays at 2.7 nm Using High HarmonicsReceived 3 March 1997; published in the issue dated 20 October 1997 Ultrafast laser pulses from a Ti:sapphire laser centered at 800 nm, with 26 fs pulse duration, were used to generate coherent soft-x-ray harmonics, at wavelengths down to 2.7 nm (460 eV) in He, and 5.2 nm (239 eV) in Ne. In He, discrete harmonic peaks are observed up to order 221, and unresolved harmonic emission is observed up to order 297. These wavelengths are well within the “water window” region of x-ray transmission. Our work represents the shortest wavelength coherent light generated to date. The harmonic cutoff from all the noble gases is consistent with analytic theory. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.2967
DOI:
10.1103/PhysRevLett.79.2967
PACS:
42.50.Hz, 32.80.Rm, 42.65.Ky, 42.65.Re
See AlsoErratum: Zenghu Chang, Andy Rundquist, Haiwen Wang, Margaret M. Murnane, and Henry C. Kapteyn, Erratum: Generation of Coherent Soft X Rays at 2.7 nm Using High Harmonics [Phys. Rev. Lett. 79, 2967 (1997)], Phys. Rev. Lett. 80, 1795 (1998). Erratum: Zenghu Chang, Andy Rundquist, Haiwen Wang, Margaret M. Murnane, and Henry C. Kapteyn, Erratum: Generation of Coherent Soft X Rays at 2.7 nm Using High Harmonics [Phys. Rev. Lett. 79, 2967 (1997)], Phys. Rev. Lett. 82, 2006 (1999). |
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