W. J. Witteman has been professor in laser physics at the University of Twente (The Netherlands) from 1969 until 1999. Next to numerous articles in the field of CO2-lasers, excimer lasers and free electron lasers he has published:
In 1987 "The CO2 Laser" (Springer Series in Optical Sciences, Vol.54)
In 1996 as co-author "Gas Lasers-Recent Developments and Future Prospects" (Kluwer Academic Publishers)
In 2004 as co-author "Handbook of Laser Technology & Applications" (Institute of Physics Publishing). He was the author of the chapter on "Excimer, F2, N2 and H2 Lasers".