New mechanism of O 2 (a<sup>1</sup>Δ g ) quenching in oxygen-contained plasmas

Braginsky, O.V.; Vasilieva, A.N.; Klopovsky, K. S.; Kovalev, A. S.; Lopaev, Dmitry; Mankelevich, Yu. A.; Попов, Н. А.; Рахимова, Т. В.; Rakhimov, A. T.; Savin, Yuri V.

doi:10.1117/12.610959

Cited by 3 publications

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Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

Heaven

2010

Laser & Photonics Reviews

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Chemical oxygen-iodine lasers are unique in their ability to generate high-power beams with near diffraction limited beam quality. The operating wavelength, 1.315 μm is readily transmitted by the atmosphere and compatible with fiber optics beam delivery systems. However, applications of the laser are severely limited by logistical problems associated with the complex chemistry used to power the device. Electrical or microwave discharge excitation of oxygen-iodine lasers offers an attractive alternative that eliminates the chemical power generation problems and has the possibility of closedcycle operation. A discharge oxygen-iodine laser was first demonstrated in 2005. Since that time the power of the device has been improved by a factor of 400 and much has been learned concerning the physics and chemistry of the discharge driven system. Although our current understanding of the chemical kinetics is incomplete, parametric studies of laser performance show considerable promise for further scaling. This article reviews the basic principles of the discharge oxygen iodine laser, summarizes the most recent advances, and outlines some of the unresolved questions regarding the production and removal of excited species in the gas flow.

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Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

Heaven

2010

Laser & Photonics Reviews

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Physics and engineering of singlet delta oxygen production in low-temperature plasma

Ионин

Кочетов

Napartovich

et al. 2007

J. Phys. D: Appl. Phys.

260

190

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An overview is presented of experimental and theoretical research in the field of physics and engineering of singlet delta oxygen (SDO) production in low-temperature plasma of various electric discharges. Attention is paid mainly to the SDO production with SDO yield adequate for the development of an electric discharge oxygen–iodine laser (DOIL). The review comprises a historical sketch describing the main experimental results on SDO physics in low-temperature plasma obtained since the first detection of SDO in electric discharge in the 1950s and the first attempt to launch a DOIL in the 1970s up to the mid-1980s when several research groups started their activity aimed at DOIL development, stimulated by success in the development of a chemical oxygen–iodine laser (COIL). A detailed analysis of theoretical and experimental research on SDO production in electric discharge from the mid-1980s to the present, when the first DOIL has been launched, is given. Different kinetic models of oxygen low-temperature plasma are compared with the model developed by the authors. The latter comprises electron kinetics based on the accompanying solution of the electron Boltzmann equation, plasma chemistry including reactions of excited molecules and numerous ion–molecular reactions, thermal energy balance and electric circuit equation. The experimental part of the overview is focused on the experimental methods of SDO detection including experiments on the measurements of the Einstein coefficient for SDO transition and experimental procedures of SDO production in self-sustained and non-self-sustained discharges and analysis of different plasma-chemical processes occurring in oxygen low-temperature plasma which brings limitation to the maximum SDO yield and to the lifetime of the SDO in an electric discharge and its afterglow. Quite recently obtained results on gain and output characteristics of DOIL and some projects aimed at the development of high-power DOIL are discussed.

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