Ion irradiation of monolayer graphene-Nd:YAG hybrid waveguides: fabrication and laser

Hybrid waveguides consisting of two-dimensional layered materials pad on the surface of optical waveguides suffer from a nonuniform and loose contact between the two-dimensional material and the waveguide, which can reduce the efficiency of the pulsed laser. Here, we present high-performance passive...

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Bibliographic Details
Published in:Optics express 2023-05, Vol.31 (11), p.17769-17781
Main Authors: Ma, Linan, Li, Shiling, Wang, Hailong, Zhou, Shengqiang, Yang, Tan
Format: Article
Language:English
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Summary:Hybrid waveguides consisting of two-dimensional layered materials pad on the surface of optical waveguides suffer from a nonuniform and loose contact between the two-dimensional material and the waveguide, which can reduce the efficiency of the pulsed laser. Here, we present high-performance passively Q-switched pulsed lasers in three distinct structures of monolayer graphene-Nd:YAG hybrid waveguides irradiated by energetic ions. The ion irradiation enables the monolayer graphene a tight contact and strong coupling with the waveguide. As a result, Q-switched pulsed lasers with narrow pulse width and high repetition rate are obtained in three designed hybrid waveguides. The narrowest pulse width is 43.6 ns, provided by the ion-irradiated Y-branch hybrid waveguide. This study paves the way toward developing on-chip laser sources based on hybrid waveguides by using ion irradiation.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.491694