A. A. Sergeev, E. E. Popov, M. V. Gavrish, P. K. Rozanov, A. A. Shavelev, A. V. Astrakhantseva, A. S. Nizamutdinov, A. P. Pogoda
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引用次数: 0
Abstract
A scheme of a high-power Cr:LiSAF laser operating in active Q-switching mode with a Pockels cell is developed. A method for shortening the laser pulse duration and increasing the peak power by means of intracavity transverse mode selection using an aperture diaphragm and external feedback with Bragg grating is proposed. As a result, the duration of the laser pulse was 19 ns and the pulse energy of 7.7 mJ, which corresponds to 0.41 MW of peak power at the central wavelength of 830 nm. The laser wavelength tuning was also adjusted in the range of 825–865 nm with a width of 2 nm. The results of the research obtained in this work will serve as a basis for the development of new systems for spectrometry for environmental monitoring of the atmosphere using the differential optical absorption spectroscopy method.
期刊介绍：
Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.
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