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Fundamentals of the nonlinear theory of Fabry-Perot semiconductor lasers have been developed, an integral part of which is the natural linewidth theory. The formula for gain depending on the energy flux specifies the basic nonlinear effect in a laser. Necessary conditions for stimulated emission of the first and second kind are presented. Maxwell's equations in the gain medium are used to obtain equations...
Structure and the nonlinear optical (NLO) susceptibility are tabulated for 110 noncentresymmetric (NCS) crystals of the simple and binary carbonates, tartrates, formates, oxalates, acetates, and fluoride-carbonates, using in optoelectronics. It is shown that in the plane of the metal-oxide bond lengths these crystals are positioned inside of the vertical, horizontal and slope intersected ellipses...
The results of the investigation of the small-angle Raman-Nath scattering in the all-optically induced gratings of susceptibility inside the oxide glass mediums are presented and the theoretical basis of the observed phenomenon is suggested.
The spectrum of the diode laser radiation at a wavelength of 795 nm with a microwave pump modulation current have been studied. The resonance dependence of the amplitude of the side band due to the microwave frequency was registered. The half-width of observing resonance was 0.02 GHz.
A voltage on grounding equipment of high-voltage substation measurement algorithm has been proposed. The algorithm involves calculation of potential-raising current taking into account transformers' grounded neutrals and earthwires of overhead power transmission lines. A installation for modelling processes that cause occurrence a voltage on the grounding arrangement has been developed.
The problems in the study of holography in the course of General Physics. Here are shown the principles of the course “Holography and its applications”. Examples researches on holographic topics.
Effective and efficient understanding of general physics course needs good presentation of education material. In this article authors offer an example of physical experiment presentation based on construction of ion engine. Understanding of physical, chemical, and mathematical principles of ion engine gives an opportunity for students to perceive basics in context of scientific understanding of world.
Precision phase measurements are necessary in many sectors of the measuring equipment. The most important parameters of these devices: 1) carrier frequency range; 2) changing range of the measured phase difference; 3) the phase measurement error; 4) frequency range for phase increments. The paper discusses the opportunities and challenges for precise measurement of phase differences for these purposes.
The authors have developed a software component of firmware complex “AKTOMIKA” intended for processing of satellite images with meteorological other purposes. The paper discusses the achievements and prospects of development of the current system. It presents illustrations showing the results of the system working.
The paper discusses the basic problems of frequency measuring and methods for improving the accuracy of these measurements. It reveals shortcomings of counting method and the advantages of the method of integral periods. Also it discusses the division of frequency measurement between standard and unique devices for these purposes.
The author has organized the project activities of computer modeling in teaching physics for IT students at the Novosibirsk State Technical University. The students' teams develop soft-ware products that are virtual counterparts of experimental setups. The developed programs can be used as interactive virtual labs that enhance the physics laboratory practicum. Participation in the project activities...
The article presents the idea on development of low-cost electronic training boards for the study of microprocessor technologies. Training boards demonstrate the all capabilities of the micro-controller: work of i/o ports, serial communication, ADC, DC and stepper motor, two-line LCD display, temperature sensors, DC motor control, stepper motor control and etc.
Development of engineering education in a contemporary research university is relied on the international CDIO (Conceive - Design - Implement - Operate) standards. An important part of the process is development of technologies of methods for development of practical skills of engineering skills of students in electronics. In this paper we discuss the problems of development of laboratory facilities...
For the first time created a Verilog-model ALU microprocessor 6502 company MOS Technology (USA) based MPGA 5503HM5 using CAD VLSI Kovcheg 3.02. It carried out a complete ALU design cycle, including the simulation of the formation of a truth table and topology. It is shown that the library 5503 is functionally complete and supports the effective development of all the constituent elements of the ALU...
The article deals with the issues of processing of results of activity of educational institutions in relation to FSAI FPE “Academy of standardization, metrology and certification (educational)” the Novosibirsk branch.
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