- 1982 - 1985Ph.D., Applied Physics, Stanford University
- 1977 - 1979 M.S., Physics, KAIST
- 1973 - 1977 B.S., Physics, Seoul National University
- 2018 - Emeritus Professor, KAIST
- 2015 - Director, Institute for Startup, KAIST
- 2013 - 2015 Vice President of Research, KAIST
- 2010 - 2011President, Optical Society of Korea
- 2002 - 2008Vice President, International Commission for Optics
- 2002 - 2005Member of the Board of Governors,
IEEE Lasers Electro-Optics Society - 1999 - Fellow, Optical Society of America, USA
- 1999 - Fellow, IEEE, USA
- 1999 - Fellow, Chartered Physicist, The Institute of Physics, UK
- 1997 - Member, Korean Academy of Science and Technology
- 1995 - 1997Chairman, Department of Physics, KAIST
- 1990 - 2018Professor, Department of Physics, KAIST
- 1985 - 1989Research Associate, Assistant Professor,
Stanford University, USA - 1979 - 1982Member of Research Staff, KIST
- 2000Best Academic Award, Optical Society of Korea