Performance and Characteristics of CW or Pulsed He-Ne, CO2, N2, Dye, Ruby, Nd:YAG, Nd:YLF and Excimer Laser Oscillation. Nondiffracted Bessel beam with annular output beam. Phase wavefront analysis of laser beam by Fourier method.

1962∼1978 Senior Researcher, Division of Physics, KAERI
1969∼1970 IAEA Fellow, Institute of Industrial Science, Tokyo University, Japan
1979∼1981 Invited Researcher, Department of Physics, KAIST
1982∼ Professor, Department of Physics, Inha University
1985∼1987 Chairman, Optics Terminology Committee, KPS
1988∼1990 Visiting Scholar, Laboratory for Laser Energetics, Univ. of Rochester, U.S.A.
1989∼1999 Director of Academic Affairs, Editor-in-Chief, Vice President, President (‘98∼’99)
1990∼1992 Director, Optics and Quantum Electronics Division, KPS
1993∼1995 Dean, College of Natural Science, Inha University
1995∼ Trustee, Korean Physical Society
1997∼1999 Director, Institute for Basic Science, Inha University

1963 Merit Citation by the President of ROK
1964 Academic Award by President of Korea Atomic Energy Office
1972 Science Award, Korean Physical Society