Multiphoton-Absorption-Excited Up-Conversion Luminescence in Optical Fibers

Fabio Mangini, Mario Ferraro, Mario Zitelli, Alioune Niang, Alessandro Tonello, Vincent Couderc, and Stefan Wabnitz

Phys. Rev. Applied 14, 054063 – Published 24 November 2020

Abstract

We experimentally demonstrate a previously unforeseen nonlinear effect in optical fibers: up-conversion luminescence generation excited by multiphoton absorption of femtosecond infrared pulses. We directly estimate the average number of photons involved in the up-conversion process, by varying the wavelength of the pump source. We highlight the role of nonbridging oxygen hole centers and oxygen-deficient center defects and directly compare the intensity of side-scattered luminescence with numerical simulations of pulse propagation.

Received 26 August 2020
Revised 25 October 2020
Accepted 27 October 2020

DOI:https://doi.org/10.1103/PhysRevApplied.14.054063

Physics Subject Headings (PhySH)

Defects Luminescence Nonlinear optical susceptibility Optical fibers Photon pairs & parametric down-conversion Ultrafast optics

Optical absorption spectroscopy

Nonlinear DynamicsInterdisciplinary Physics

Authors & Affiliations

Fabio Mangini ^1,†, Mario Ferraro ^2,*,†, Mario Zitelli², Alioune Niang¹, Alessandro Tonello³, Vincent Couderc ³, and Stefan Wabnitz ^2,4

¹Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy
²Department of Information Engineering, Electronics, and Telecommunications, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy
³Université de Limoges, XLIM, UMR CNRS 7252, 123 Avenue A. Thomas, 87060 Limoges, France
⁴Novosibirsk State University, Pirogova 1, Novosibirsk 630090, Russia

^*mario.ferraro@uniroma1.it
^†These authors contributed equally to this work.

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Vol. 14, Iss. 5 — November 2020

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Physical Review Applied