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Open Access Publications from the University of California

Rotational multiphoton endoscopy with a 1 μm fiber laser system

  • Author(s): Liu, G
  • Xie, T
  • Tomov, IV
  • Su, J
  • Yu, L
  • Zhang, J
  • Tromberg, BJ
  • Chen, Z
  • et al.

We present multiphoton microendoscopy with a rotational probe and a 1 μm 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° full-view rotation. The fiber laser provides ultrashort pulses with a central wavelength at 1.034 μm 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. © 2009 Optical Society of America.

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