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Opt Express. 2009 Jun 8;17(12):9858-72.

Optical frequency up-conversion by supercontinuum-free widely-tunable fiber-optic Cherenkov radiation.

Author information

  • 1Biophotonics Imaging Laboratory, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA. htu@illinois.edu

Abstract

Spectrally-isolated narrowband Cherenkov radiation from commercial nonlinear photonic crystal fibers is demonstrated as an ultrafast optical source with a visible tuning range of 485-690 nm, which complementarily extends the near-infrared tuning range of 690-1020 nm from the corresponding femtosecond Ti:sapphire pump laser. Pump-tosignal conversion efficiency routinely surpasses 10%, enabling multimilliwatt visible output across the entire tuning range. Appropriate selection of fiber parameters and pumping conditions efficiently suppresses the supercontinuum generation typically associated with Cherenkov radiation.

PMID:
19506636
[PubMed - indexed for MEDLINE]
PMCID:
PMC2883326
Free PMC Article

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