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We investigated the characteristics of noise-like pulses (NLPs) from a net normal dispersion Yb-doped fiber laser (YDFL) by using the grating pairs (GPs) inside the laser cavity as a dispersion compensation element. Without the insertion of the slit inside the laser cavity, the operation of the YDFL is at an NLP state with the double-scale intensity(More)
The bound states of multiple dispersion-managed solitons (DMSs) were experimentally investigated from a net-normal-dispersion passive mode-locked Yb-doped fiber laser based on the nonlinear polarization rotation mechanism through the proper adjustment of the waveplate at certain pump power. The long-term operation of the bound double DMSs has been(More)
All-fiber in-line twist sensor based on an ultrasensitive fiber-Mach-Zehnder-interferometer with cascaded two fiber tapers is proposed. Experimental results show wavelength shifts and spectral loss of the measured interference fringes are correlated with the twist angles.
We have investigated the epoxidation of ethylene heterogeneously catalyzed by small gold nanoclusters based on density functional theory calculations. A promising trimolecular Langmuir-Hinshelwood mechanism via co-adsorbed ethylene- and CO-assisted reaction is addressed which provides significant insights into the fundamental catalytic mechanism for(More)
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