Ultrafast intermodal third harmonic generation in a liquid core step-index fiber filled with C2Cl4

Schaarschmidt K, Kobelke J, Nolte S, Meyer T, Schmidt MA (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Optics Express Optical Society of America

Book Volume: 28

Pages Range: 25037-25047

Journal Issue: 17

DOI: 10.1364/OE.399771

Abstract

Third harmonic generation in a circular liquid core step-index fiber filled with a highly transparent inorganic solvent is demonstrated experimentally using ultrafast pump pulses of different durations in the telecom domain for the first time. Specifically we achieve intermodal phase matching to the HE13 higher order mode at the harmonic wavelength and found clear indications of a non-instantaneous molecular contribution to the total nonlinearity in the spectral broadening of the pump. Spectral power evolution and efficiency of the conversion process is studied for all pulse parameters, while we found the greatest photon yield for the longest pulses as well as an unexpected blue-shift of the third harmonic wavelength with increasing pump power. Our results provide the basis for future studies aiming at using this tunable fiber platform with a sophisticated nonlinear response in the context of harmonic generation.

Involved external institutions

Leibniz-Institut für Photonische Technologien e.V.

Germany (DE) Friedrich-Schiller-Universität Jena

Germany (DE)

How to cite

APA:

Schaarschmidt, K., Kobelke, J., Nolte, S., Meyer, T., & Schmidt, M.A. (2020). Ultrafast intermodal third harmonic generation in a liquid core step-index fiber filled with C2Cl4. Optics Express, 28(17), 25037-25047. https://doi.org/10.1364/OE.399771

MLA:

Schaarschmidt, Kay, et al. "Ultrafast intermodal third harmonic generation in a liquid core step-index fiber filled with C2Cl4." Optics Express 28.17 (2020): 25037-25047.

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