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Creators/Authors contains: "Ma, Chunyang"

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  1. ; ; ; (, Photonics Research)
    While the performance of mode-locked fiber lasers has been improved significantly, the limited gain bandwidth restricts them from generating ultrashort pulses approaching a few cycles or even shorter. Here we present a novel method to achieve few-cycle pulses ( ∼ 5    cycles ) with an ultrabroad spectrum ( ∼ 400    nm at − 20    dB ) from a Mamyshev oscillator configuration by inserting a highly nonlinear photonic crystal fiber and a dispersion delay line into the cavity. A dramatic intracavity spectral broadening can be stabilized by the unique nonlinear processes of a self-similar evolution as a nonlinear attractor in the gain fiber and a “perfect” saturable absorber action of the Mamyshev oscillator. To the best of our knowledge, this is the shortest pulse width and broadest spectrum directly generated from a fiber laser. 
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  2. ; ; (, Optics Letters)
  3. ; ; ; (, Digest of technical papers - Conference on Lasers and Electro-optics)
    A few cycle pulses (~5 cycles) with broad spectrum (~400 nm) are generated from a Mamyshev oscillator. Such a broad spectrum can be stabilized in the cavity by a self-similar attractor in the gain fiber. 
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