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professor profile
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Education
  • 1989: Ph.D., Princeton University
  • 1984: M.S., Princeton University
  • 1982: B.S. Seoul National University
Research Interests
  • Ultrafast optics: fs TW lase, sub-10 fs laser, CEP-stabilized fs laser, attosecond pulse generation
  • Ultrafast X-ray science: study of ultrafast dynamics in atomic, molecular, and condensed system using fs, and pulse
Major Research Achievements
  • Development of analysis technique of molten Zn pot by using laser-induced breakdown spectroscopy
  • Development of 2.87 nm source for X-ray microscope using a stable liquid nitrogen jet(Grand Prize (Presidential Award) in 2007 Korea Invetion and Patents Competition)
  • Demonstration of 50 nm-resolution imaging using synchrotron-based X-ray microscope
  • Demonstration of isolated attosecond pulse and its application to attosecond transient absorption spectroscopy and photoemission spectroscopy
  • Demonstration of current switching in dielectrics at PHz rate
  • Successful demonstration of 18.2 nm soft x-ray amplification using capillary-discharge plasmaSuccessful demonstration of 18.2 nm soft x-ray amplification using capillary-discharge plasma
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