Supercontinuum generation in single crystal sapphire fibers

Stuart Shizhuo Yin, Jae Hun Kim, Chun Zhan, Jun Won An, Jon Lee, Paul Ruffin, Eugene Edwards, Christina Brantley, Claire Luo

    Research output: Contribution to journalArticlepeer-review

    21 Scopus citations


    In this paper, we report supercontinuum generation by launching ultra-short femtosecond laser pulses into single crystal sapphire fibers. The major advantages of using sapphire fiber for supercontinuum generation are: (1) high transparency up to 5 μm, (2) low material dispersion in the 0.8-5 μm spectral range, and (3) a higher laser damage threshold (500 times higher than that of silica). Thus, a very high power, super broadband [from visible to middle IR (up to 5 μm)], supercontinuum source can be realized by employing sapphire fiber for supercontinuum generation. Our experimental results also confirm that sapphire fiber can offer a broader supercontinuum spectrum than that of bulk sapphire counterpart under the same exciting conditions. This work opens the door to new opportunities in generating high power supercontinuum radiation (in particular, at the middle-IR regime), and will have a great impact on many applications, including sensing and broadband multi-spectrum free space communications.

    Original languageEnglish (US)
    Pages (from-to)1113-1117
    Number of pages5
    JournalOptics Communications
    Issue number5
    StatePublished - Mar 1 2008

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Physical and Theoretical Chemistry
    • Electrical and Electronic Engineering


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