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.
Refractive index modulation of novel mid-infrared fibers using ultrafast laser ablation
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVI ; 2022 ; San Diego,California,United States
Proc. SPIE ; 12229
2022-10-03
Conference paper
Electronic Resource
English
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