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DOE OSTI · 3025668

Thomson Scattering with Gain

Turnbull, D. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics] (ORCID:0000000298871028)·Milder, A. L. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics] (ORCID:0000000299886109)·Follett, R. K. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics]·Katz, J. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics]·Froula, D. H. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics]
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Abstract

Thomson-scattering signals can be significantly modified by convective gains associated with the stimulated Raman scattering and stimulated Brillouin scattering instabilities as the scattered light traverses the probe beam. Gain results in amplification and narrowing of the red-shifted (i.e., Stokes) scattered light, whereas blue-shifted (anti-Stokes) features are depleted and broadened, making the relative prominence of these features a key signature of gain. Not accounting for instability growth has been a ubiquitous source of error in previous Thomson-scattering measurements.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYElectrostatic waves & oscillationsInelastic light scatteringLaser-plasma interactionsOptical plasma measurementsPlasma fusionPump-probe spectroscopyTime-resolved light scattering spectroscopy

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Turnbull, D. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics] (ORCID:0000000298871028), Milder, A. L. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics] (ORCID:0000000299886109), Follett, R. K. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics], Katz, J. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics], Froula, D. H. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics]. 2026-03-31. Thomson Scattering with Gain. https://doi.org/10.1103/brqm-r3vp

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