Enhancing the yield of high-order harmonics with an array of gas jets
Authors: Pirri A., Corsi C., Bellini M.
Autors Affiliation: CNR – Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
LENS Firenze, Italy
Abstract: We report the experimental observation of an enhancement in the yield of high-order harmonics using an array of gas jets as the source medium. By comparing the experimental outcome for jet arrays of different spacings with the predicted harmonic intensity in the case of slit sources of equivalent lengths, we clearly show how the periodic modulation of the gas density can improve the harmonic yield. This behavior may be attributed to a quasi-phase-matching effect which increases the length of coherent harmonic buildup during propagation by partially counteracting the dephasing induced by free electrons.
Journal/Review: PHYSICAL REVIEW A
Volume: 78 (1) Pages from: 011801 to: 011801
KeyWords: Harmonic analysis; Jets; Modulation, American Physical Society (APS); De-phasing; Experimental observations; Free electrons; Gas density; Gas jets; Harmonic intensity; High-order harmonics (HH); Jet arrays; Periodic modulation; Quasi-phase-matching (QPM), Density of gasesDOI: 10.1103/PhysRevA.78.011801Citations: 66data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-05-31References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here