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Rotational multiphoton endoscopy with a 1 microm fiber laser system.

  • Author(s): Liu, Gangjun;
  • Xie, Tuqiang;
  • Tomov, Ivan V;
  • Su, Jianping;
  • Yu, Lingfeng;
  • Zhang, Jun;
  • Tromberg, Bruce J;
  • Chen, Zhongping
  • et al.
Abstract

We present multiphoton microendoscopy with a rotational probe and a 1 microm fiber-based femtosecond laser. The rotational probe is based on a double-clad photonic crystal fiber, a gradient index lens, a microprism, and a rotational microelectronicmechanical system (MEMS) motor. The MEMS motor has a diameter of 2.2 mm and can provide 360 degrees full-view rotation. The fiber laser provides ultrashort pulses with a central wavelength at 1.034 microm and a repetition rate of 50 MHz. Second-harmonic-generation images of rat-tail tendon and fish scale are demonstrated with the rotational probe-based multiphoton system.

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