Abstract

Resonance enhancement of a single order harmonic has been a main attractive feature in high-harmonic generation from laser ablated plumes of metals. Although it has been extensively investigated experimentally and theoretically, studies so far have focused only on linearly polarized driving fields. In this Letter, we study the dependence of the resonant harmonic yield in tin ions on the driving laser ellipticity. We find that the resonance leads to a less rapid decay of the harmonic yield as a function of driving ellipticity, and it is qualitatively reproduced by quantum mechanical simulations. To the best of our knowledge, our findings provide a new type of evidence for supporting previously proposed mechanisms for enhancement.

© 2021 Optical Society of America

Chirp-control of resonant high-order harmonic generation in indium ablation plumes driven by intense few-cycle laser pulses

Z. Abdelrahman, M. A. Khokhlova, D. J. Walke, T. Witting, A. Zair, V. V. Strelkov, J. P. Marangos, and J. W. G. Tisch
Opt. Express 26(12) 15745-15758 (2018)

Investigation of high-harmonic cutoff of metal ions driven by near-infrared laser

Wufeng Fu, Yu Hang Lai, Jingguang Liang, and Wei Li
Opt. Express 30(13) 23090-23101 (2022)

Using the generation of Brunel harmonics by elliptically polarized laser pulses for high-resolution detecting lower-frequency radiation

A. A. Silaev, A. A. Romanov, and N. V. Vvedenskii
Opt. Lett. 47(18) 4664-4667 (2022)

Distinguishing monomer and nanoparticle contributions to high-harmonic emission from laser-ablated plumes

Jingguang Liang, Yu Hang Lai, Wufeng Fu, Chunlei Guo, and Wei Li
Opt. Express 29(15) 23421-23429 (2021)

Resonance-affected high-order harmonic emission from atomic and molecular chromium laser-induced plasmas

Rashid A. Ganeev and Hiroto Kuroda
OSA Continuum 4(5) 1545-1554 (2021)