27 September 2013 Generation of a beat-wave pulse train for quasi-phase-matched high-harmonic generation
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For quasi-phase matching of high-harmonic generation at short wavelengths, a beat-wave pulse train with 66-fs pulse separation is generated from a two-color Ti:sapphire amplifier system. By using such pulse train to collide with the main driving pulse for harmonic generation in the interacting media, quasi-phase matching can be achieved. The 66-fs pulse separation matches to a quasi-phase-matching zone length of 4.9 μm, which corresponds to a dephasing length for 3-nm harmonic generation under 1.0×1018 cm−3 plasma density. The pulse train energy is 100 mJ, sufficient to support more than 1000 quasi-phase-matching zones.
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Chi-Hsiang Yang, Chi-Hsiang Yang, Shih-Chi Kao, Shih-Chi Kao, Jyhpyng Wang, Jyhpyng Wang, Hsu-hsin Chu, Hsu-hsin Chu, "Generation of a beat-wave pulse train for quasi-phase-matched high-harmonic generation", Proc. SPIE 8849, X-Ray Lasers and Coherent X-Ray Sources: Development and Applications X, 884907 (27 September 2013); doi: 10.1117/12.2022434; https://doi.org/10.1117/12.2022434


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