Control of pulse-to-pulse fluctuations in visible supercontinuum

Long-pulse supercontinuum sources are initiated by modulation instability and consequently suffer from stochastic shot-to-shot variations of their spectral power density. In this paper, we provide a measurement of pulse-to-pulse fluctuations over the whole supercontinuum spectrum, and we show that t...

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Veröffentlicht in:Optics express 2010-12, Vol.18 (26), p.27445-27454
Hauptverfasser: Kudlinski, A, Barviau, B, Leray, A, Spriet, C, Héliot, L, Mussot, A
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Sprache:eng
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Zusammenfassung:Long-pulse supercontinuum sources are initiated by modulation instability and consequently suffer from stochastic shot-to-shot variations of their spectral power density. In this paper, we provide a measurement of pulse-to-pulse fluctuations over the whole supercontinuum spectrum, and we show that their spectral dependence follows the group index curve of the fiber. Then, we demonstrate a significant reduction of supercontinuum pulse-to-pulse fluctuations in the visible by using a photonic crystal fiber with longitudinally tailored guidance properties. We finally show numerically that this new source would allow a significant improvement of the signal-to-noise ratio in fluorescence microscopy.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.18.027445