In this article, we consider the features of the perception of student information in science, technology, engineering, and mathematics (STEM) education, in order to draw the attention of researchers to the topic of learning in practice through field training. The article shows the results of these studies in Russia and the Commonwealth of Independent States (CIS countries: Armenia, Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Russia, Tajikistan, and Uzbekistan, as an example) to reflect the global trends. For this purpose, we examined the expectations of students in Russia and the CIS countries from training related to lectures and field training. We created a questionnaire and distributed it in three Moscow-based universities (Moscow State University of Geodesy and Cartography-MIIGAiK, Moscow Aviation Institute-MAI, and Moscow City University-MCU). Our key assumption is that field practices in Russian universities are qualitatively different from the phenomenon described in European literature, where digital or remote field practices have already emerged. The results obtained through the survey show the tendency of students' perceptions to fulfill practical duties (in a laboratory with instruments of field training) in STEM education.

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The influence of reflective Bragg gratings that are formed in an active medium due to the spatial periodic modulation of gain on the spectral properties of lasing are investigated by an example of a pulsed Nd : YAG laser. It is shown that, at a certain choice of the formation regime of reflective gratings of gain, the lasing bandwidth can be reduced by a factor of 3 – 5, with a corresponding increase in the pulse energy and significant improvement of spatial beam quality.

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The article presents an overview of laser products presented at the Laser World of Photonics-2019 exhibition. EAGLEYARD Photonics creates laser diodes with wavelengths from 630 to 1120 nm. The active medium for laser diodes are semiconductor materials. The production provides high quality crystals, and limitations on the accuracy and lifetime of laser diodes are due only to the characteristics of gallium arsenide used as an active medium. Radiant Dyes Laser produces dye lasers and laser dyes themselves. To increase the output parameters in the laser design, optomechanics of completely non-magnetic materials is used. В статье преставлен обзор лазерных продуктов, представленных на выставке Laser World of Photonics-2019. Компания EAGLEYARD Photonics создает лазерные диоды с длиной волны от 630 до 1120 нм. Активной средой для лазерных диодов являются полупроводниковые материалы. Производство обеспечивает высокое качество кристаллов, и ограничения по точности и времени жизни лазерных диодов обусловлены только характеристиками арсенида галлия, используемого в качестве активной среды. Компания Radiant Dyes Laser производит лазеры на красителях и сами красители для лазеров. Для повышения выходных параметров в конструкции лазера используют оптомеханику из абсолютно немагнитных материалов.