Previous fields of work:

Theory of optical solitons.
Numerical methods in nonlinear optics.
Nonlinear Fiber Optics.

I am currently involved in the following projects:

A table-top narrow-band soft-X-ray laser source for spectroscopic applications.
Laser pulse compression by Stimulated Brillouin Scattering.
Brillouin scattering of Bessel beams.
High harmonic generation in hollow fibers.


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High-resolution laser spectroscopy of rare gases and diatomic molecules in the Vacuum Ultraviolet (VUV) and eXtreme Ultraviolet (XUV).
Iodine saturation spectroscopy and frequency calibration in the visible.
Here you can view the callibrated "t" components of the hyperfine structure in B-X system of iodine for J=9..140 in (18-1)..(13-1) bands. This is supplementary material to:
I. Velchev, R. van Dierendonck, W. Hogervorst and W. Ubachs, "A Dense Grid Of Reference Iodine Lines For Optical Frequency Calibration In The Range 571-596nm"
Journal of Molecular Spectroscopy 187, pp. 21-27 (1998)
R branch (View:AppI.txt[14 KB] or Download: AppI.zip[5 KB])
P branch (View:AppII.txt[14 KB] or Download: AppII.zip[5 KB])