XeCl laser system with a 25 cm × 25 cm output aperture

Abstract

Novel periodic oscillations of magnetoresistance observed in a recent quantum Hall effect experiment on a narrow two-dimensional sample have been explained on the basis of a Josephson-type effect. The calculated values of the period of oscillation in the regions of plateaux 2 and 4 agree excellently with the measured values.

High-Power Laser Systems of UV and Visible Spectral Ranges

“…The MELS-4 k laser system consists of the master complex, preamplifier, and a UFL-100 M amplifier [7]. The master complex contains two electric-discharge XeCl lasers.…”

“…To find the energy parameters of the radiation, we numerically simulate the amplification modes. For this purpose, we employ the one-dimensional model developed at HCEI based on the system of nonstationary equations for the concentrations of the excimer molecules and the photon fluxes [7].…”

“…For the main amplifier with a lower pump power, the parameters of the active medium are as follows: g 0 = 0.065 cm −1 , α = 0.0145 cm −1 , τ ef = 3 ns, σ = 4 × 10 −16 cm 2 , and τ s = 14 ns [7]. Figure 3 demonstrates the intensity distributions of the amplified radiation and ASE for the single-pass (a) and double-pass (b) configurations.…”

“…In the calculations, we employ the nonstationary model and, therefore, observe the shape of the desired signal and the ASE pulse shape [7]. The pulses at the input and output of the active medium may substantially differ from each other.…”

“…Russian institutions also develop and create the powerful excimer lasers and laser systems [4][5][6][7][8][9][10][11][12]. In particular, a KrF laser system with a Garpun output unit (Institute of Physics, Russian Academy of Sciences) has an output aperture with a size of 16 × 18 cm and one generates radiation pulses with energy of 80 J and pulse duration of 100 ns [12].…”