14 February 2007 Nonlinear optics for high-order frequency conversion: applied attosecond science
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Abstract
We show that it is possible to use of a train of counterpropagating light pulses to enhance the coherent upconversion of intense femtosecond lasers into the extreme ultraviolet (EUV) region of the spectrum. This all optical quasi-phase-matching uses interfering beams to scramble the quantum phase of the generated EUV light, suppressing the contribution of out-of-phase emission. Selective enhancement of up to 600X is observed at photon energies of ~70 eV using argon gas and ~ 150 eV using helium gas.
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X. Zhang, X. Zhang, A. L. Lytle, A. L. Lytle, D. Gaudiosi, D. Gaudiosi, T. Popmintchev, T. Popmintchev, H. C. Kapteyn, H. C. Kapteyn, M. M. Murnane, M. M. Murnane, O. Cohen, O. Cohen, } "Nonlinear optics for high-order frequency conversion: applied attosecond science", Proc. SPIE 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI, 64550F (14 February 2007); doi: 10.1117/12.715068; https://doi.org/10.1117/12.715068
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