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Proceedings Paper

Maximizing the bandwidth while minimizing the spectral fluctuations using supercontinuum generation in photonic crystal chalcogenide fibers
Author(s): C. R. Menyuk; R. J. Weiblen; J. Hu; L. B. Shaw; J. S. Sanghera; I. D. Aggarwal
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Paper Abstract

Recent computational work to optimize the output spectrum of As2Se3 and As2S3 chalcogenide photonic crystal fibers is summarized. Design procedures for both maximizing the output bandwidth and maximizing the power spectral density in the 3-5 μm range are described. With a 2.5μm pulsed pump source, it is possible to obtain a bandwidth of 4 μm in As2Se3 fibers, and, with a 2.0 μm pulsed pump source, it is possible to shift 25% of the input power to the 3-5 μm range in As2S3. With a source at 2.8 μm, it is possible to obtain an output power spectral density in As2S3 that extends between 2.5 μm and 6.5 μm. The single-shot output power spectral density exhibits rapid 10-20 dB fluctuations as the wavelength varies. Moreover, when the pump pulse duration and peak power vary, there are substantial shot-to-shot fluctuations in both the output bandwidth and spectral power density. With 10% variations of the pump pulse duration and peak power, the output spectrum averaged over 5000 shots exhibits less than 5 dB of variation in the intermediate wavelength range of 2.8-4.6 μm and has a reproducible bandwidth of slightly less than 3 μm. The average over 5000 shots yields the same output spectrum with 106 shots, indicating that the spectrum has converged.

Paper Details

Date Published: 15 October 2013
PDF: 7 pages
Proc. SPIE 8898, Technologies for Optical Countermeasures X; and High-Power Lasers 2013: Technology and Systems, 88980C (15 October 2013); doi: 10.1117/12.2031967
Show Author Affiliations
C. R. Menyuk, Univ. of Maryland, Baltimore County (United States)
R. J. Weiblen, Univ. of Maryland, Baltimore County (United States)
J. Hu, Baylor Univ. (United States)
L. B. Shaw, U.S. Naval Research Lab. (United States)
J. S. Sanghera, U.S. Naval Research Lab. (United States)
I. D. Aggarwal, Sotera Defense Solutions, Inc. (United States)


Published in SPIE Proceedings Vol. 8898:
Technologies for Optical Countermeasures X; and High-Power Lasers 2013: Technology and Systems
David H. Titterton; Mark A. Richardson; Robert J. Grasso; Harro Ackermann; Willy L. Bohn, Editor(s)

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