The main types of the modern photo detectors applied to single photon registration are analyzed. It is offered to use silicon photomultipliers for production of multi-channel optoelectronic systems with the single photon resolution.

The regenerative amplification system of femtosecond laser pulses, delivering a laser pulses with peak power more then 1 GW and duration <330 fs at repetition rates 1–10 kHz is presented. This system is applicable in pump-probe spectroscopy with high temporal resolution, as well as for pumping of optical parametric oscillators for generation of infrared femtosecond pulses.

Construction principles of highly effective measuring systems based on two-wavelength semiconductor lasers and the concept «a priori information elimination» are presented. These systems provide advantages before similar one-wavelength laser measuring instruments.

The article presents a block diagram and operation of the algorithm of a hardware-software system developed for precision farming. An experimental model of hardware and software system is produced.

Shows the block diagram of the laboratory system for investigation of fatigue degradation in ferromagnetic materials by method of magnetic noise. Describes the principle operation of the system, given the practical results its using in assessment of the degree fatigue degradation in ferromagnetic structural steels and alloys on the basis of cyclic testing and measuring the intensity of the magnetic noise.

The multifunctional sensor of solution type and concentration in a technological pipeline is developed on a basis of the methodology of measurements of parameters of objects with indefinite states. Theoretical and experimental results demonstrate that both concentration measurement and solution type definition modes can be realized in a single one-element sensor. Adaptive control of excitation regimes of sensor’s electrodes is needed to ensure single-signal measurements. Algorithms of measurements and construction of a measuring device for multiparameter measurements of liquid media properties utilizing adaptive technique of measurements of parameters of objects with indefinite states are developed.

The opportunity of nanoporous anodic alumina substrate utilization for the manufacture of the preconcentrator of gas system «Electronic nose» is shown. Optimization of temperature distribution in the preconcentrator area containing adsorbent could be possible by the choice of the basic parameters of the alumina substrate and preconcentrator geometry.

The apparatus requirements and preliminary results of development of special program and apparatus system «SPAS» for heart and blood vessels diagnostics by oscillometry method have been described. The estimation of apparatus realization using PIC16f870i/sp controller have been given.

Automatic metering system using devices and instruments for inertial navigation has been elaborated. The system allows more accurate measurement of angular deviation of installation sites for scientific equipment. Enhanced functionality is achieved by additional measuring of the azimuth angle error.

The article introduces a standard base of Belarus in the field of photometry. Scientific research conducted on the standards can be interest for professionals working in the areas of mechanical engineering, instrument, medicine, agriculture and other.

In this work we suggested the principles of design and block schemes of probe systems for analytical and interoperation measurement and inspection of high-speed microand nano on a chip systems in the nanosecond range. The sources of wideband signals distortion and errors of probe inspection systems for large integrated circuits inspection as well as transient response of high speed contacting probes are considered with the OTDR device with picosecond resolution. The features and defined errors of precision positioners for linear stepper motors and magnetic air motors for precise positioning of the probes on the pads with automatic sensing of LSI wafer are discussed.

 

 We report on the measurements of absorption coefficient of the synthetic diamond crystal using an adapted form of laser calorimetry technique at wavelengths of 1064, 640, 532, 452 and 364 nm. The absorption coefficient was found to increase exponentially from 0,03 cm^-1 at 1064 nm to 0,7 cm^-1 at 364 nm.

Diode-pumped passively Q-switched microchip Er,Yb:YAl₃(BO₃)₄ laser for range-finding has been demonstrated. By using a Co²⁺:MgAl₂O₄ as a saturable absorber TEM00–mode Q-switched average output power of 315 mW was demonstrated at 1522 nm with pulse duration of 5 ns and pulse energy of 5,25 μJ at a repetition rate of 60 kHz.

Concept of a new generation of physiotherapeutic complexes is analyzed. The requirements for the database for them are formulated. List of problems that should be addressed to create such complexes is given.

The results of measuring the temperature in a platinum filament tape, pre-heated in vacuum by direct current and irradiated a millisecond laser pulse, are presented. Gradual increase of the previous heating at a constant power irradiation density allows to receive the melted layer of different thickness without a destruction of the tape. The measurement have been carried out by photoemission method at the time resolution of 5 μs under the method and apparatus error of 0,3 % и 0,5 %, respectively. Such a method of combined heating can be used in metrological measurements under a solid-liquid phase equilibrium temperature.

The experimental complex of percussive-frictional massager with electrostimulation function and softand hardware of original design gives a possibility to use various mechanical and electrical parameters of massage and electrostimulation and it can be used like the alternative instead of the accepted medicine analgesics. Analgesic effect decreases pain sensation of the patient up to 50 %.

The developed original methodology is designed for testing van containers for cross-section and longitudinal sidesway typical in normal operation and does not require implementation of high cost equipment, devices, massive base or plates. The offered loading pattern and test methodology is highly cost effective, e.g. with minimum expenses it is possible to estimate the structural behavior of van containers, which is crucial for their development, manufacture and operation and makes it possible to hold trials at the enterprise, aimed at improvement of non-cargo container design.