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Nonlinear Optical Response of Chinese Teas Probed by Spatial Self-Phase Modulation

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Abstract

Chinese tea is the most highly consumed beverage globally. Its different types exhibit a strong nonlinear optical response as probed previously by Z-scan technique at various time scales. In this work, infusions of commercially available black, green, and white Chinese teas, prepared by running one cycle of a Soxhlet extraction, were studied by spatial self-phase modulation of a CW laser; each sample was found to have a different nonlinear refractive index n2, which can be used to distinguish these teas.

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Acknowledgments

We are appreciative of the technical support of C-LABMU (UEPG).

Funding

The authors received financial support from the INCT-FCx, and the Brazilian agencies CNPq, CAPES, and Fundação Araucária.

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Authors and Affiliations

  1. Physics Department, State University of Ponta Grossa, Ponta Grossa, PR, Brazil

    Diogo L. M. de Souza, Marcos V. G. Bittencourt, Gerson K. da Cruz & Sergio L. Gómez

  2. Physics Department, Federal University of Technology-Paraná, Ponta Grossa, PR, Brazil

    Vinícius M. Lenart & Rozane F. Turchiello

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  1. Diogo L. M. de Souza
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  2. Marcos V. G. Bittencourt
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  3. Vinícius M. Lenart
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  5. Rozane F. Turchiello
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  6. Sergio L. Gómez
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Correspondence to Sergio L. Gómez.

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de Souza, D.L.M., Bittencourt, M.V.G., Lenart, V.M. et al. Nonlinear Optical Response of Chinese Teas Probed by Spatial Self-Phase Modulation. Braz J Phys 50, 394–398 (2020). https://doi.org/10.1007/s13538-020-00756-9

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  • DOI: https://doi.org/10.1007/s13538-020-00756-9

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