This paper addresses the results of experimental and model studies of a copper bromide vapor brightness amplifier at high pump pulse repetition rates. The features of the operating mode that are associated with the use of a reduced energy input into the discharge to obtain superradiance and amplification at frequencies above 100 kHz are noted. For the first time, for active media on metal vapors, the superradiance obtained at a pump pulse repetition rate of up to 300 kHz in a CuBr-vapor medium. A prototype model of a high-speed brightness amplifier has been developed.

The paper presents the results of research and development of a high-speed brightness amplifier based on copper bromide vapor active medium, with a pulse repetition frequency of up to 200 kHz. This became possible due to the use of the reduced input energy into the discharge mode (less than 60 µJ / cm3 per pulse), by shortening the leading edge of the high-voltage pump pulse to 20 ns and the duration (at half-height) to 30 ns.

The results of research and development of a high-speed brightness amplifier based on an active medium on copper bromide vapors with a pulse repetition frequency of up to 200 kHz are presented. Operation at such repetition frequency was made possible owing to the mode of reduced energy input into the discharge (less than 60 μJ/cm3 per pulse) by means of shortening the front of the high-voltage pump pulse to 20 ns and the duration (at half-height) to 30 ns.

The results of the development of a high-frequency pumping source for active media on self-terminating transitions in metal vapors, which allows operation in the mode of a low energy deposition into the discharge, are presented. Reduced energy deposition into the discharge is provided due to the pumping of the active medium with short-duration high-voltage pulse (3 kV, 15 А, 40–60 ns). A record-high radiation-pulse repetition rate of 200 kHz in the active medium of copper bromide vapors was obtained when operating in the superradiance mode.

The results of the operation of a capacitive pumped CuBr laser in a reduced energy deposition mode are presented. A high radiation-pulse repetition rate of 100 kHz in the active medium of copper bromide vapors was obtained. The results of OrCAD simulation of the high-frequency metal vapor active media pumping source with capacitive pumping are presented.

This paper presents the study of the control functions for the temperature control of containers with the active substance in active media on metal vapors. Nonlinear control function was built and tested with a layout of container. Tests demonstrate discordant, but primary positive results of using nonlinear regulator instead of linear proportional-integral-differential (PID) regulator.

This paper presents the study of the influence of particular terms of developed control functions for the temperature control and heating dynamics of the containers with the active substance of metal vapors. The efficiency of using different terms for different stages and imposing additional conditions, taking into account the peculiarities of temperature movement in the different periods of nonlinear controller operation, is shown. Testing was carried out on the layout of the container.

The paper presents experimental results on obtaining high pulse repetition frequencies of radiation/gain in copper bromide vapor active media. Also the results of experimental and theoretical studies of radial profiles of radiation and amplification of such media at raised pump pulse frequencies are given.

The results of the development of the high-frequency metal vapor active media power supply are presented. The results of OrCAD simulation of the processes that occur in the power supply are described. The results of the simulation and experiment for the resistive load operation mode were compared.

Results of the experimental study of two high-frequency active elements of different sizes of a CuBr laser operating in the generator, single-pass amplification, and superradiance modes are presented. A pulse repetition rate of 195 kHz is attained for the first time in the supperradiance mode. Using the method of express estimation of the radial profile, it is shown that the gain profile does not change significantly throughout a wide pulse repetition rate range (up to 195 kHz) in the case of a small-diameter active element.

The paper presents the results of the experimental study of a copper bromide vapor active medium operation in the amplified spontaneous emission (ASE) mode with the pulse repetition frequency (PRF) up to 200 kHz. The oscillograms of the active medium radiation pulse at various frequencies in a generator (lasing) mode, single-pass amplification mode and ASE are presented. The possibility to use active media on self-terminating transitions as brightness amplifiers at PRFs higher than 100 kHz has been shown.

In this paper, the experimental studies of copper bromide vapor brightness amplifiers operating at high pulse repetition frequencies are presented. The obtained results show that the injection of active hydrogen-containing additives allows to increase the radiation (gain) pulse repetition frequency in active elements with a diameter of the active zone larger than 1 cm.

In this paper the circuits of high frequency trigger generators of pulses of the nanosecond duration are presented. A detailed study of a generator based on the avalanche transistor with the use of a coaxial cable instead of a capacitor is described. This circuit showed advanced characteristics of the output pulses. A circuit of a generator built on high-speed digital components is also considered. The basic advantages and disadvantages of both generators are presented in this paper.

The paper presents the experimental and modeling results on obtaining high pulse repetition frequencies (PRF) (more than 100 kHz) of copper bromide vapor brightness amplifiers operating in a low input energy mode. The use of metal vapor brightness amplifiers for visual non-destructive testing of objects and fast processes blocked from observation by the intense background light is also discussed. It has been shown that the imaging method proposed in this paper proves to be the most reliable one for obtaining information about objects or processes in a real time mode using high PRF CuBr active media.

In this paper the modern optical techniques for intracranial traumas diagnosis are presented. The main attention is paid to the near-infrared spectroscopy as the most reasonable and effective technique in case of emergency diagnostics. The existing devices based on this operating principle and their limitations are discussed. Moreover, the proposed experimental setup for the diagnosis of hematoma and its localization, several limitations of the device and possible ways of upgrading the system are discussed. The principle of designing a physical phantom of a head with a hematoma, which parameters can be changed by an operator, is also presented.

This paper reports the results of the experimental study of a high frequency nanosecond pulse generator for CuBr laser pumping. The operation of the generator in trains and pulse periodic modes is shown.