Eltjo Haselhoff, Ph.D., began his study of physics at Twente University, one of the three Dutch technical universities. After finishing the 5'/2-year program in 1987, specializing in high-power gas lasers, nonlinear optics, and ultrashort optical pulse detection, he worked at several Dutch research institutes and at Los Alamos National Laboratories, USA. His main activities were in the fields of free-electron laser research, accelerator technology, ultrahigh vacuum technology, semiconductor photoemission cathodes for high-current electron beam accelerators, and ultrafast optical infrared switches. In 1993 he obtained his Ph.D. in experimental and theoretical physics after successfully defending his thesis,
Aspects of a Compton Free-Electron Laser.
Today he works in industry as senior clinical scientist in the magnetic resonance marketing department of a leading provider of medical imaging equipment.
In the strictly scientific period of his professional life (1985-1994) the author published several dozen articles in peer-reviewed scientific journals on (electro-) optics, lasers, and general matters. Since the start of his industrial career in 1995 he has been more dedicated to executive tasks. Nevertheless, he has published some scientific papers since then, one of which was related to the crop circle phenomenon.
Besides crop circles and his regular work in industry, the author has many other interests. He composes music (mainly folk, bluegrass, and jazz) and plays a handful of musical instruments (violin, acoustic and electric guitars, five-string banjo, piano, and some more). He has been a cartoonist for several regional magazines. He is a painter, a prolific photographer, designs and constructs furniture and acoustic guitars, and is skilled in woodcarving, particularly pearl inlay techniques.
Reference: p. 157 of Haselhoff, Eltjo H., The Deepening Complexity of Crop Circles, Berkeley, CA: Frog, Ltd., 2001