Abstract

Visible to near-infrared, widely broadened supercontinuum generation is demonstrated using an ultrashort-pulse fiber laser system. A 229mW, 83fs high-power ultrashort pulse was generated at 1550nm in an Er-doped fiber-chirped pulse amplification system. An almost pedestal-free 107fs second-harmonic pulse was generated at 780nm using periodically poled LiNbO3. A 0.451.38μm widely broadened supercontinuum was generated in a highly nonlinear photonic crystal fiber. In terms of spectral flatness, the total modulation bandwidth was within 14dB. All of the fiber devices were fusion spliced so that the system showed good stability. The effect of a pulse-trapping phenomenon in the supercontinuum generation process was discussed from experimental considerations.

© 2009 Optical Society of America

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