SCIENTIFIC AND ORGANIZATION STRUCTURE

LABORATORY OF OPTICAL RADIATION

The group of optical radiation was established in January of 1983 exercising the rights as a group, and in 1990 it received the status of a laboratory. The founder and head of the laboratory is Professor, Doctor of Phys.-Math. Sciences Victor F. Tarasenko. Today, the laboratory staff is of 23, including 2 Doctors of Science (namely, Victor M. Orlovskii and Victor F. Tarasenko who have been working at the IHCE since 1969), 7 Candidates of Science, 5 post-graduate students, and other of the personnel are engineers, technically qualified persons and laboratory assistants. During the past 20 years, the staff of the Laboratory of Optical Radiation investigated active and optical media, pulsed lasers on dense gases, spontaneous radiation sources (excilamps), as well as carried out experiments on radiation interaction with a matter. The Laboratory closely collaborates with other laboratories of the IHCE SB RAS, and other scientific teams in Tomsk, Russia and abroad, being one of the main organizers of the biannual International conference "Atomic and Molecular Pulsed Lasers" (AMPL) which will be held in 2003 in Tomsk for the sixth time.

Research activities

Obtain of high radiation efficiencies in lasers-induced active and optical gas media and investigations on radiation interaction with a matter.

Major scientific achievements

Exciplex lasers based on noble gas halogenides with unique parameters have been created. For the first time, pulse radiation duration of XeCl-laser of 1 µs and efficiency of KrCl-laser of 2% have been obtained. Radiation energies of 2 kJ at λ =308 nm, 100 J at λ=250 nm, 100 J at λ=1.73, and 50 J at 2.03 have been realized in e-beam pumped lasers.
Efficient non-chain HF-lasers based on chemical reaction initiated by a self-sustained discharge and an electron beam have been created. Radiation energy obtained in a pulse is up to 200 J, specific radiation energy is up to 140 J/l·at, and the intrinsic efficiency with is ~11% (with pioneered pumping by a self-sustained discharge).
Generators based on inductive storage capacities for pumping pulsed lasers and excilamps have been created. For the first time, when using the similar generator and a semiconductor current switch, the pulsed repetition rate as 12 kHz at laser pumping and 100 kHz at excitation of VUV excilamp based on Xe dimers have been obtained. A XeCl-laser has been developed and manufactured comprising an inductive storage capacity (driving generator for laser system with low divergence of radiation) with pulse duration at FWHM of 300 ns and pulsed energy of 1 J or 200 ns and 1,6 J, correspondingly.
A number of studies devoted to coaxial, cylindrical, and planar sources of spontaneous radiation pumped by a glow, barrier, or capacitive discharge, including excitation by short duration pulses, were performed. Low-pressure glow-discharge KrCl and XeCl excilamps with average radiation power of up to 1.6 kW in the UV spectral range have been built. Pulsed KrCl and KrF excilamps with radiation power density of up to 5 kW/cm² have been also created. The sealed-off spontaneous radiation sources with high efficiency and lifetime above 2500 hrs have been developed radiating at the wavelengths 172, 206, 222, 253, 282 and 308 nm with average radiation power of up to 100 W. The samples of excilamps and lasers were demonstrated at the International and Russian exhibitions and won one gold, two silver and three bronze medals, as well as diploma and patents.

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