Refractive index modulation of novel mid-infrared fibers using ultrafast laser ablation

Devyn Duryea; Tevin Poudrier; Nirmala Kandadai

doi:10.1117/12.2633161

3 October 2022 Refractive index modulation of novel mid-infrared fibers using ultrafast laser ablation

Devyn Duryea, Tevin Poudrier, Nirmala Kandadai

Proceedings Volume 12229, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVI; 1222904 (2022) https://doi.org/10.1117/12.2633161
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

Laser sources in the mid-infrared (mid-IR) region are of great interest for use in military defense and scientific applications. Recent advancements in mid-IR fiber technology using materials such as ZBLAN and chalcogenide optical fibers open the potential to create novel mid-IR all-fiber lasers. A typical laser cavity design consists of a set of mirrors separated by the gain material. One technique for creating an all-fiber laser cavity is to create two fiber Bragg gratings (FBG) separated by a length of the fiber. Direct writing using femtosecond laser has shown to create a stable Fiber Bragg Grating that will survive under harsh environments. However, a detailed understanding of how mid-IR fiber’s refractive index (RI) varies with laser parameters is currently not well studied. In our work, we will present how the RI of ZrF₄-BaF₄- LaF₃-AlF₃-NaF (ZBLAN) and chalcogenide-based mid-IR fibers changes based on the laser power.

Conference Presentation

Citation Download Citation

Devyn Duryea, Tevin Poudrier, and Nirmala Kandadai "Refractive index modulation of novel mid-infrared fibers using ultrafast laser ablation", Proc. SPIE 12229, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVI, 1222904 (3 October 2022); https://doi.org/10.1117/12.2633161

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