CuBr-Ne-HBr laser with a high repetition frequency of the lasing pulses at a reduced energy deposition in the discharge

Experimental and computer studies of the CuBr laser with periodic-pulse pumping are performed with and without addition of HBr. The analysis based on the numerical simulation reveals how additions improve the lasing characteristics of this laser at both typical (10 to 20 kHz) and higher (up to 100 kHz) excitation pulse repetition frequencies during the operation with a low energy deposition in the discharge. This allows the lasing pulse repetition frequency to be increased in the experiment to 750 kHz, which does not seem to be a limit as yet.     

Reduction of copper bromide molecules in the plasma of a CuBr laser during the interpulse period

The operation of a CuBr laser in an excitation pulse train mode has been investigated. The experimental data obtained allow one to determine the characteristic time for which copper atoms are lost by the active medium of the laser. The analysis performed based on a numerical simulation of the laser operation has shown that the copper atoms are lost in the processes of reduction of CuBr molecules due to reactions of interaction of copper atoms with bromine ions. The predicted time for which copper atoms are lost by the laser active medium (150 μs) is in good agreement with the experimental one.     

Turbulence Scales of the Monin–Obukhov Similarity Theory in the Anisotropic Mountain Boundary Layer

Russian Physics Journal - The characteristics of turbulence over mountainous terrain are investigated with an aim to predict propagation of short-wavelength electromagnetic waves (including optical...     

Simulation of a CuBr laser

A method to calculate the prepulse concentrations of the CuBr molecules in the active medium of a CuBr laser is proposed. A comparison with the available experimental data is presented.     

Effect of hydrogen additives on characteristics of the CuBr laser

Kinetic processes in the active medium of the copper bromide vapor laser with hydrogen additives are described in detail. Mechanisms for improvement of its lasing characteristics by hydrogen additives are analyzed.     

Combined weak-current discharge in a copper-vapor laser

We have considered the application of a new method of pumping of active media on metal vapors by a combined weak-current discharge. A distinguishing feature of a weak-current discharge compared to the method for the traditional pumping of self-contained lasers is the regime of lower energy input to the discharge. Using this regime, it is possible to realize a pulsed-periodic form of the discharge with laser pulses of various shapes and durations at low current amplitudes (several amperes). Additional pulsed-periodic discharge is used to heat the active zone.