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Proceedings Paper

Middle-IR supercontinuum generations and applications
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Paper Abstract

In this paper, the two different mechanisms of supercontinuum generation in single crystal sapphire fibers according to fiber lengths longer and shorter than dispersion length are theoretically and experimentally investigated. When the fiber length is shorter than the dispersion length, self-phase modulation is the dominant factor for supercontinuum broadening. A broad spectrum ranging from near-IR (1.2 μm) to the lower end of mid-IR (2.8 μm) is obtained. But, when the fiber length is longer than dispersion length, soliton-related dynamics with self-phase modulation is the dominant factor for supercontinuum. We further demonstrate that supercontinuum in a sapphire fiber can extend beyond the range of silica fibers by showing the spectrum from 2 μm to 3.2 μm. Also, we successfully apply the supercontinuum source generated from a sapphire fiber to IR spectroscopy. The spectra of pseudo-TNT chemical measured using our own supercontinuum source is in good agreement with those obtained by FTIR. Supercontinuum generation using a sapphire fiber, which has high damage threshold and broad transmission ranges can be used in many applications such as IR spectroscopy, broadband LADAR, remote sensing, and multi-spectrum free space communications.

Paper Details

Date Published: 25 August 2008
PDF: 9 pages
Proc. SPIE 7056, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II, 70560V (25 August 2008); doi: 10.1117/12.793942
Show Author Affiliations
Jae Hun Kim, The Pennsylvania State Univ. (United States)
Meng-Ku Chen, The Pennsylvania State Univ. (United States)
Chia-En Yang, The Pennsylvania State Univ. (United States)
Jon Lee, The Pennsylvania State Univ. (United States)
Stuart S. Yin, The Pennsylvania State Univ. (United States)
Karl Reichard, The Pennsylvania State Univ. (United States)
Paul Ruffin, U.S. Army Aviation and Missile Research, Development and Engineering Ctr. (United States)
Eugene Edwards, U.S. Army Aviation and Missile Research, Development and Engineering Ctr. (United States)
Christina Brantley, U.S. Army Aviation and Missile Research, Development and Engineering Ctr. (United States)
Claire Luo, General Opto Solutions, LLC (United States)


Published in SPIE Proceedings Vol. 7056:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II
Shizhuo Yin; Ruyan Guo, Editor(s)

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