Higher harmonics and supercontinuum generated from response time of Kerr medium effect using intense femtosecond laser pulses in different states of matter from an electromagnetic model

Robert R. Alfano; Shah Faisal B. Mazhar

doi:10.1117/12.2678334

21 December 2023 Higher harmonics and supercontinuum generated from response time of Kerr medium effect using intense femtosecond laser pulses in different states of matter from an electromagnetic model

Robert R. Alfano, Shah Faisal B. Mazhar

Author Affiliations +

Proceedings Volume 12652, UV and Higher Energy Photonics: From Materials to Applications 2023; 1265203 (2023) https://doi.org/10.1117/12.2678334
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

A universal model is described for Higher Harmonic Generation (HHG) in different states of matter. Based on an electromagnetic model (EM), the generation of Odd Higher Harmonic (HHG) and Supercontinuum (SC) from intense fs and ps pulses for visible, NIR, and MIR lasers is simulated for the different Kerr material response times τ from the ultrafast on the order of 100 attoseconds for electronic cloud distortion to fast ~10 femtoseconds from plasma and molecular redistribution and to the slower picoseconds rotational and vibrational molecular processes. The number of odd HHG generated is shown to depend critically on the fastest Kerr response time on the order of ~ a femtosecond from electronic self-phase modulation (ESPM). The EM model is universal for the production of HHG and SC in different states of matter.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Robert R. Alfano and Shah Faisal B. Mazhar "Higher harmonics and supercontinuum generated from response time of Kerr medium effect using intense femtosecond laser pulses in different states of matter from an electromagnetic model", Proc. SPIE 12652, UV and Higher Energy Photonics: From Materials to Applications 2023, 1265203 (21 December 2023); https://doi.org/10.1117/12.2678334

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