Six-photon resonant scattering of collinear laser pulses in plasma

Journal Article · 22 October 2023 · Physical Review. E

DOI: https://doi.org/10.1103/physreve.108.045208 · OSTI ID:2373127

Malkin, V. M.  ^[1]; Fisch, N. J.  ^[2]

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1. Princeton University, NJ (United States); Princeton University
2. Princeton University, NJ (United States)

To achieve the highest possible laser intensities with the least laser energy, shorter-wavelengths lasers are advantaged if they can be focused to spots of a few laser wavelengths and durations of several laser periods. However, the top laser pulse energies available nowadays are megajoules at near-optical wavelengths and millijoules at shorter wavelengths. Thus, to produce the highest laser intensities, what is required is an efficient spectral transfer of the huge near-optical energies to shorter wavelengths. It is proposed here that the desired spectral transfer could occur via resonant photon interactions associated with nonlinearity of mildly relativistic motions of plasma electrons in intense laser fields, specifically via the six-photon resonant scattering of collinear laser pulses in plasma. As a result, the six-photon interaction can, in fact, be the dominant resonant photon interaction to achieve collinear frequency up-conversion.

• Research Organization: Princeton University, NJ (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: SC0021248; NA0003764
• OSTI ID: 2373127
• Journal Information: Physical Review. E, Journal Name: Physical Review. E Journal Issue: 4 Vol. 108; ISSN 2470-0045
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English