Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 23: Photonics I

Q 23.3: Vortrag

Montag, 11. März 2019, 16:45–17:00, S Ex 04 E-Tech

The impact of a new approach for the Kerr nonlinearity parameter on four wave mixing — •Izzatjon Allayarov¹, Swaathi Upendar¹, Markus A. Schmidt^2,3, and Thomas Weiss¹ — ¹4th Physics Institute and Research Center SCoPE, University of Stuttgart, Germany — ²Leibniz Institute of Photonic Technology, Germany — ³Otto Schott Institute of Material Research, Friedrich Schiller University of Jena, Germany

Nowadays, hollow-core photonic crystal fibers are widely used in optics, since their linear and nonlinear optical properties are highly tunable [1]. However, a thorough theoretical formulation for the pulse propagation in such fibers has been missing so far due to the leaky nature of the occurring modes. We have recently derived such a formulation that is capable of treating guided and leaky modes based on the so-called resonant-state expansion with analytical mode normalization [2]. For leaky modes, we find that the Kerr nonlinearity parameter has an imaginary part that provides either nonlinear gain or loss for overall attenuating pulse that can significantly influence the pulse dynamics with intense pulse compression and spectral broadening in the case of nonlinear gain. Our theory can be extended to parametric processes such as degenerate four-wave mixing.

[1] F. Benabid and P. J. Roberts, J. Mod. Opt. 58, 87 (2011).

[2] I. Allayarov et al., Phys. Rev. Lett. 121, 213905 (2018).