Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Characterization of Supercontinuum and Ultraviolet Pulses by Using XFROG

  • Tsermaa, Baatarchuluun (Institute of Photonics and Information Technology, Chonbuk National University) ;
  • Yang, Byung-Kwan (Institute of Photonics and Information Technology, Chonbuk National University) ;
  • Kim, Myung-Whun (Institute of Photonics and Information Technology, Chonbuk National University) ;
  • Kim, Jin-Seung (Institute of Photonics and Information Technology, Chonbuk National University)
  • Received : 2009.02.04
  • Accepted : 2009.03.04
  • Published : 2009.03.25
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Abstract

We present cross-correlation frequency-resolved optical gating (XFROG) measurements of supercontinuum pulses generated by using a photonic crystal fiber (PCF), and ultraviolet (UV) pulses generated by frequency doubling of infrared ultra-short pulses. Since supercontinuum pulses have broad spectra, XFROG measurement typically requires using an extremely thin nonlinear crystal which has a thickness of sub-ten microns. Instead of using such a thin crystal, we employed a relatively thick crystal which was mounted on a galvanometer in order to achieve a phase-matching over the whole spectral bandwidth of the supercontinuum pulses by a crystal-dithering technique. Experimental results of the retrieved phase and intensity were in fair agreement with the independently measured data.

Keywords

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