Summary
High-order harmonic generation in a long gas jet is controlled in the space and time domains using chirped and self-guided femtosecond laser pulses. Since high-order harmonic generation is intrinsically connected to the ionization process of harmonic generation medium, ionization effects on high-order harmonic generation should be properly understood and taken into account. Here, we present a method to control high-order harmonic generation process by controlling the propagation mode of intense femtosecond laser pulses through the ionizing medium. Experimental results and theoretical analysis show that self-guided and chirped laser pulses can optimize high-order harmonics for achieving high brightness, low beam divergence, and narrow spectral bandwidth.
On leave from National Institute for R&D of Isotopic and Molecular Technologies, Cluj-Napoca, Rumania
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Nam, C.H., Kim, H.T., Tosa, V. (2007). Control of High Harmonic Generation Processes Using Chirped and Self-Guided Femtosecond Laser Pulses. In: Progress in Ultrafast Intense Laser Science II. Springer Series in Chemical Physics, vol 85. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-38156-3_8
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DOI: https://doi.org/10.1007/978-3-540-38156-3_8
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