Angular dependence of the transverse Raman scattering in KDP and DKDP in geometries suitable for beam polarization control

Kosc, T. Z.; Huang, H.; Kessler, T. J.; Demos, S. G.

doi:10.1364/OE.448388

Angular dependence of the transverse Raman scattering in KDP and DKDP in geometries suitable for beam polarization control

Journal Article · Mon Apr 04 00:00:00 EDT 2022 · Optics Express

DOI:https://doi.org/10.1364/OE.448388· OSTI ID:1861089

Kosc, T. Z.; Huang, H.; Kessler, T. J.;

The angular dependance of the transverse Raman scattering in potassium dihydrogen phosphate (KDP) and its deuterated analogue (DKDP) for the entire range of crystal configurations suitable for laser beam polarization control has been investigated via experimental and modeling tools. This work was made possible by simultaneously rotating a spherical sample and the pump polarization to effectively measure the angular dependance of the transverse Raman signal in 360°. This novel method, which is applicable for the investigation of the Raman scattering in optically anisotropic materials, demonstrates that the spontaneous Raman scattering signal exhibits strong angular dependence that is modulated by depolarization and polarization rotation effects generated as the Raman signal traverses the material due to its birefringence. The results show that the total signal generated by the pump beam is the sum of the signals generated by the two components that have polarization parallel and orthogonal to the optic axis. The peak signal intensity, which is of importance for high-power laser applications, depends on the orientation of the optic axis and can vary by a factor of about 2. The excellent agreement between experimental data and modeling results validates the associated models and enables one to consider optimal crystal cut designs for specific applications.

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Research Organization:: Univ. of Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003856

OSTI ID:: 1861089

Alternate ID(s):: OSTI ID: 1860938

Journal Information:: Optics Express, Journal Name: Optics Express Journal Issue: 8 Vol. 30; ISSN 1094-4087; ISSN OPEXFF

Publisher:: Optical Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

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