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Transverse stimulated raman scattering (TSRS) in potassium dihydrogen phosphate (KDP) and deuterated potassium dihydrogen phosphate (DKDP) plates for polarization control is a well-recognized limitation, giving rise to parasitic energy conversion and laser-induced damage. TSRS amplification is a coherent process that grows exponentially and distributed nonuniformly in the crystal and at the crystal surfaces. To understand the growth and spatial distribution of TSRS energy, a modeling approach was developed to simulate operational conditions in inertial confinement fusion-class laser systems. The result helps assess upper limits for operational conditions and guide possible ways to suppress the TSRS gain.
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Hu Huang, Tanya Z. Kosc, Terrance J. Kessler, Stavros G. Demos, "Modeling transverse stimulated Raman scattering in DKDP polarization control plates," Proc. SPIE PC12300, Laser-Induced Damage in Optical Materials 2022, PC123000K (2 December 2022); https://doi.org/10.1117/12.2641980