An all-fiber femtosecond Cherenkov radiation source is demonstrated for the first time, to the best of our knowledge. Using a stable monolithic femtosecond Ybdoped fiber laser as the pump source, and the combination of photonic crystal fibers as the wave-conversion medium, we have generated tunable Cherenkov radiation at visible wavelengths 580 - 630 nm, with pulse duration of sub-160 fs, and the 3 dB spectral bandwidth not exceeding 36 nm. Such femtosecond source can find applications in practical biophotonics such as bio-imaging and microscopy.
Epj Web of Conferences: Novel Pulsed Sources: Oscillators, Amplifiers, Nonlinear Mixing, Electrons, X-rays, 2013
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E P J Web of Conferences
18th International Conference on Ultrafast Phenomena (UP 2012)