Browsing by Author "Li, Xiaofeng"

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    • Mode-Locked Pulses from Mid-Infrared Quantum Cascade Lasers 

      Wang, Christine Y.; Kuznetsova, Lyuba; Gkotsas, Vasileios‐Marios; Diehl, Laurent; Kaertner, Franz X.; Belkin, Mikhail A.; Belyanin, Alexey; Li, Xiaofeng; Ham, Donhee; Schneider, Harald; Grant, Peter; Song, C. Y.; Haffouz, Soufien; Wasilewski, Zbigniew; Liu, H. C.; Capasso, Federico (Optical Society of America, 2009-12-01)
      In this study, we report the unequivocal demonstration of midinfrared mode-locked pulses from quantum cascade lasers. The train of short pulses was generated by actively modulating the current and hence the gain of an ...

    • Stretchable Microfluidic Radiofrequency Antennas 

      Kubo, Masahiro; Li, Xiaofeng; Kim, Choongik; Hashimoto, Michinao; Wiley, Benjamin J.; Ham, Donhee; Whitesides, George McClelland (Wiley-Blackwell, 2010)
      Highly stretchable and robust antennas are fabricated by injecting liquid metal into a microfluidic channel that consists of two types of silicone rubber with different stiffness. The resulting antennas exhibit high ...