Д. Н. Козлов

OPTICAL DIAGNOSTICS OF HYDROGEN-AIR MIXTURE COMBUSTION IN THE DEVELOPMENT OF LOW-EMISSION TECHNOLOGIES FOR GASEOUS FUEL COMBUSTION

А.Н. ДУБОВИЦКИЙ, Е.Д. СВЕРДЛОВ, В.Д. КОБЦЕВ, Д. Н. Козлов et autres

Near-IR range laser generation of refractive index gratings in O2 gas: Role of mono- and bimolecular absorption and collisional relaxation

Д. Н. Козлов

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Thermometry of Spatially Inhomogeneous Methane–Air Flame Using Two-Color Planar Laser-Induced Fluorescence and Coherent Anti-Stokes Raman Scattering Spectroscopy

К. А. Верещагин, V. D. Kobtsev, S. A. Kostritsa, Д. Н. Козлов et autres

Abstract Using two-color planar laser-induced fluorescence (PLIF) of OH hydroxyl radicals excited at two wavelengths and coherent anti-Stokes Raman scattering (CARS) spectroscopy of H2 molecules in a laboratory burner, we have measured spatial temperature distributions in the central section of a stationary …

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Mid-Infrared Generated Laser-Induced Grating Signals in Methane-Containing Gas Mixtures as Indicators of Composition, Pressure, and Temperature

Anna‐Lena Sahlberg, Dina Hot, Zhongshan Li, Д. Н. Козлов

The present work is aimed at studying how spatially periodic modulations of the refractive index of the medium, i.e., laser-induced gratings (LIGs), generated in a gas mixture containing methane (CH 4 ) by nanosecond pulses of resonant mid-infrared laser radiation, can be …

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Ammonia-Nitrogen Gas Phase Diagnostics Applying Laser-Induced Electrostrictive and Thermal Gratings

Jonas I. Hölzer, Д. Н. Козлов, Thomas Seeger

Pump-laser absorption of ammonia at 1064nm may generate a thermal contribution to a laser-induced grating (LIG) in ammonia-nitrogen gas mixtures. We demonstrate a simplified approach for simultaneous mixture composition and temperature evaluation in this system using the LIG technique.

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Two-color four-wave mixing contribution to an electrostrictive laser-induced grating signal in CO 2 –N 2 mixtures and gas diagnostics: publisher’s note

Jonas I. Hölzer, Д. Н. Козлов, Thomas Seeger

This publisher's note corrects content in Appl. Opt.62, 8115 (2023)APOPAI0003-693510.1364/AO.497467.

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Two-color four-wave mixing contribution to an electrostrictive laser-induced grating signal in CO 2 –N 2 mixtures and gas diagnostics

Jonas I. Hölzer, Д. Н. Козлов, Thomas Seeger

Multiparameter determination in the gas phase using the versatile laser-induced grating (LIG) technique is a challenging task due to interdependence of observables on multiple thermodynamic parameters. In CO 2 -N 2 mixtures, simultaneous determination of species concentration and gas temperature can be …

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Optical Spectroscopic Study of Diffusion Combustion of a Suspension of Boron Nanoparticles in Isopropanol in Oxygen Coflow

K. O. Aiyyzhy, Е. В. Бармина, V. D. Kobtsev, Д. Н. Козлов et autres

The stationary diffusion combustion of a boron nanoparticle suspension in isopropanol in oxygen coflow and the pulsed laser photolytic initiation of this combustion were studied. Experiments were carried out using a number of spectroscopic methods. Coherent anti-Stokes Raman scattering spectroscopy was used …

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Coherent Anti-Stokes Raman Scattering Measurements of Time and Length Scales of Temperature Fluctuations in a Turbulent Flame

V. D. Kobtsev, Д. Н. Козлов, S. A. Kostritsa, S.N. Orlov et autres

The ability to derive temporal and spatial scales of “instantaneous” local temperature variations in a turbulent flame by means of coherent anti-Stokes Raman scattering (CARS) spectroscopy is demonstrated, for the first time to our knowledge. The measurements employed two CARS spectrometers with …

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Optical Spectroscopic Study of Diffusive Combustion of a Suspension of Boron Nanoparticles in Isopropanol in Cocurrent Oxygen Flow

K. O. Aiyyzhy, Е. В. Бармина, V. D. Kobtsev, Д. Н. Козлов et autres

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Experimental Study of the Diffusion Combustion of Suspension of Boron Nanoparticles in Isopropanol

Е. В. Бармина, M. I. Zhilnikova, K. O. Aiyyzhy, V. D. Kobtsev et autres

Abstract In this paper, temperature distribution in the diffusion flame during combustion of isopropanol or isopropanol with addition of boron nanoparticles in the amount of 0.5 wt % in oxygen was studied experimentally by using coherent anti-Stokes Raman scattering (CARS) spectroscopy. The …

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Simultaneous multiparameter evaluation from laser-induced grating experiments

Jonas I. Hölzer, Д. Н. Козлов, Thomas Seeger

A four-wave mixing signal contribution has been found in 1064 nm pumped laser-induced grating (LIG) experiments in CO2 that allows the otherwise challenging simultaneous determination of multiple thermodynamic parameter.

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