Maximizing the bandwidth while minimizing the spectral fluctuations using supercontinuum generation in photonic crystal chalcogenide fibers
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Menyuk, Curtis R., R. J. Weiblen, J. Hu, I. D. Aggarwal, L. B. Shaw, and J. S. Sanghera. “Maximizing the Bandwidth While Minimizing the Spectral Fluctuations Using Supercontinuum Generation in Photonic Crystal Chalcogenide Fibers.” In 2015 IEEE Summer Topicals Meeting Series (SUM), 65–66, 2015. https://doi.org/10.1109/PHOSST.2015.7248195.
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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract
Supercontinuum generation in the mid-infrared (mid-IR) spectrum has a broad array of potential applications in medicine, environmental sensing, and defense. Mid-IR sources play a crucial role in defending aircraft against missile attacks [1]. It is desirable to have a source that acts like a mid-IR “light bulb” to produce a broadband, flat, and incoherent spectrum. In work to date, we have demonstrated that it is possible to obtain a bandwidth of 4 μm in As₂Se₃ chalcogenide hexagonal photonic crystal fibers that are pumped at 2.5 μm with pulse durations that are 500 fs or longer and pump peak powers of 1 kW or more with careful design of the fiber parameters [2]. We have also shown that it is possible to put more than 25% of the power in the range of 3-5 μm in As₂Se₃ chalcogenide fibers with a pump at 2 μm [3].