In TSU learn to design lasers with desired properties

In Tomsk State University (TSU) Developed a high-performance computing system that allows to design Lasers with desired properties. It can significantly reduce the cost and expedite production.

Thanks to update and expand the equipment and devices Tomsk scientists are world-class results

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The project "
Development of high-performance software for the simulation of advanced laser media based on organic compounds in solid matrices"Carried out with the support of the Federal Program" Research and Development "2007-2013. The amount of funding: budget — 8,000,000 rubles, extra-budgetary — 2,000,000 rubles. Deadline — October 12 2011 to September 5, 2012. The project is also being implemented in the framework of Technology Platform "Innovative laser, optical and opto-electronic technologies — photonics" 

Lasers are used in a variety of spheres — medicine,
environmental, chemical industry, Oil Production etc. Over the past 50 years they have been taught to do on a variety of active media (radiation sources). The most promising are the organic compound. Today, synthetic chemistry produces a variety of organic molecules with different functional capabilities, allowing you to develop lasers for specific purposes.

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"Currently, the task of creating lasers with desired characteristics for specific scientific or practical problems, — says the head of the Laboratory of Photonics Department Siberian Physico-Technical Institute of Tomsk State University Victor Artukhov. — More often than not meet all the parameters is not possible. Therefore it is necessary to find a compromise. Slightly worse stability, but the correct wavelength, low cost of production, but rapid development, etc. In preliminary calculations and modeling of laser media can all be predicted in advance discussions with the potential customer all the details. It is necessary to consider what kind of impact he will choose: gas, liquid, solid, organic matter, what ecological requirements it must meet. "

  • Viktor_Artyuhov
  • Viktor_Artyuhov

Victor Artukhov believes that the development of lasers with desired characteristics to find compromises in advance discussing with potential customers all the details

The laser is characterized primarily by the wavelength. In some cases it is necessary to achieve an accuracy of 1-2 nanometers. Scientists are developing a laser active medium in the range of 800 to 300 nanometers. At one time they owned the world record for the shortest radiation for liquid lasers based on organic compounds (328 nm). In addition, it is necessary to take into account characteristics such as the length of the pulse excitation source operating life and, finally, the estimated cost.

Creating a laser — a complex work of several teams. All one needs to calculate play in models, laboratory samples, remove the data on the respective devices in an experiment to compare. In order to perform such work should continue to develop experimental techniques. Over the past 10 years, the University of Tomsk was able to renew and expand the fleet of equipment and appliances. It has good academics spectrometers, a large set of lasers as excitation sources. All of this allows them to conduct research — both theoretical and experimental, to get world-class results.

Complex calculation

To create a laser with specified properties initially generated active species — to select the optimal concentration of the substance, the parameters of the radiation pulse pumping conditions. All this requires complicated calculations which can be simplified by modeling the environment. Scientists have created a program that allows you to pre-define all the parameters needed to create a material with the desired properties: its concentration, density, and the pumping power.

"Calculations were carried out on a supercomputer SKIF Cyberia, which was established in Tomsk University in 2007 with the direct participation of the Russian company" T-Platforms, "- says Victor Artukhov. — In our studies, attended by members of the Physics Department of Tbilisi State University and experts in the field of parallel computing. In fact there were three groups involved. "

In a data storage system supercomputer, a database, which contains characteristics of molecules, the results of quantum chemical and experimental measurements. As well as the results of the program for the calculation of the lasing characteristics. On the whole computer system includes a computer program, an electronic database and interface that connects all and allows the user to manage the computing experiment. Thus was created an automated high-performance hardware and software system that allows you to simulate the active medium with desired properties and to obtain the desired spectral and energy parameters of lasers.

The distinctive features that define the uniqueness of the created hardware and software, are the use of supercomputing technology and broadband access, which allows any scientist to do research and get results quickly.

Economic effect

Scientists have calculated the TSU economic effect of the use of their computer system. Use it to reduce development costs and the optimization of the active elements of solid-state lasers. Experimental determination of the composition and mode of operation of laser-active medium — very costly, time-consuming and lengthy process. Thus, the synthesis of the matrix of one party takes 2 to 4 weeks with strict temperature control. The cost of laser dyes acceptable purity is very high — an average of about 25,000 rubles per 1 gram. In order to optimize the composition of the matrix only experimentally successively have synthesized and studied several parties — from 3 to 5 samples of laser-active media, which will take about six months work. The use of high-performance software package created by Tomsk scientists, will reduce the time to optimize the composition of the synthesis and study of materials up to 1 month.

Applications:

  • Development of high-performance software for the simulation of advanced laser media based on organic compounds in solid matrices , ppt (2824 Kb)

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