All-optical spatiotemporal phase-matching of high harmonic generation using a traveling-grating pump field

Gilad Robert Barir; Georgiy Shoulga; Oded Katz; Alon Bahabad

doi:10.1117/12.2648212

15 March 2023 All-optical spatiotemporal phase-matching of high harmonic generation using a traveling-grating pump field

Gilad Robert Barir, Georgiy Shoulga, Oded Katz, Alon Bahabad

Author Affiliations +

Proceedings Volume PC12419, Ultrafast Phenomena and Nanophotonics XXVII; (2023) https://doi.org/10.1117/12.2648212
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Recently an all-optical Quasi Phase Matching (QPM) scheme for High Harmonic Generation (HHG) was introduced in which the pump beam was constructed in the form of an intensity grating whose periodicity could be easily tuned to allow selective enhancement of specific harmonic orders. This was performed using a two-component fundamental beam, superposing a Bessel beam and a Gaussian beam. Here we extend this scheme by constructing the pump as a travelling grating with both controlled periodicity and velocity - utilizing a spatiotemporal modulation, thus allowing both selective harmonic enhancement and fine-tuning of its frequency. Therefore, this scheme can be extremely useful for spectroscopic applications.

Conference Presentation

Citation Download Citation

Gilad Robert Barir, Georgiy Shoulga, Oded Katz, and Alon Bahabad "All-optical spatiotemporal phase-matching of high harmonic generation using a traveling-grating pump field", Proc. SPIE PC12419, Ultrafast Phenomena and Nanophotonics XXVII, (15 March 2023); https://doi.org/10.1117/12.2648212

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