All-fiber femtosecond Cherenkov source
1 DTU Fotonik, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
2 Biophotonics Imaging Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, U.S.A.
3 Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
a e-mail: email@example.com
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.
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