Prof. L. N. Sinitsa Profile

Prof. L. N. Sinitsa

at V.E.Zuev Institute of Atmospheric Optics

SPIE Involvement:

Author

Publications (55)

Proceedings Article | 17 October 2023 Paper

Lines broadening in the 3-0 vibrational band of the 15N18O molecule induced by air pressure

L. Sinitsa, V. Serdyukov, Iu. Baranovskaya

Proceedings Volume 12780, 127800A (2023) https://doi.org/10.1117/12.2688317

KEYWORDS: Spectral resolution, Mixtures, Infrared radiation

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Proceedings Article | 8 December 2022 Paper

Measurements of the O2-broadening and shifting parameters of the HDO-16 and HDO-17 spectral lines in the 6400-7000 cm-1 region

L. Sinitsa, V. Serdyukov, Iu. Baranovskaya

Proceedings Volume 12341, 123410N (2022) https://doi.org/10.1117/12.2644799

KEYWORDS: Absorption, Oxygen, Spectroscopy, Remote sensing, Atmospheric optics, Spectral resolution, Atmospheric modeling, Signal to noise ratio, Gases

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Proceedings Article | 16 December 2021 Paper

Measurements of the O2-broadening and shifting parameters of the H217O- spectral lines in the (111)-(000) band

L. Sinitsa, V. Serdyukov, Iu. Baranovskaya

Proceedings Volume 11916, 119160A (2021) https://doi.org/10.1117/12.2603485

KEYWORDS: Absorption, Oxygen, Spectroscopy, Temperature metrology, Spectral resolution, Signal to noise ratio, Molecules, Atmospheric optics, Atmospheric modeling, Liquids

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Proceedings Article | 12 November 2020 Paper

Study of nanoporous silica structure by spectral analysis

N. Emel'yanov, L. Sinitsa, A. Lugovskoi, V. Serdyukov, V. Annenkov

Proceedings Volume 11560, 115600G (2020) https://doi.org/10.1117/12.2576125

KEYWORDS: Absorption, Silica, Liquids, Calibration, Atmospheric optics, Temperature metrology, Tablets, Nitrogen, Earth's atmosphere

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Proceedings Article | 12 November 2020 Paper

Line-shape parameters of H2O perturbed by N2 in the ~22000 cm-1 region

Viktor Serdyukov, Leonid Sinitsa, Anna Dudaryonok, Nina Lavrentieva, Nikolay Lavrentiev

Proceedings Volume 11560, 115600F (2020) https://doi.org/10.1117/12.2575716

KEYWORDS: Absorption, Signal to noise ratio, Spectroscopy, Light emitting diodes, Nitrogen, Fourier transforms, Spectral resolution, Doppler effect, Microwave radiation

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Proceedings Article | 12 November 2020 Paper

Ground-based FTIR observations of CH4 total column at Tomsk in comparison with IASI satellite data

V. Serdyukov, M. Makarova, Yu. Gridnev, B. Voronin, D. Petrov, A. Shcherbakov, L. Sinitsa

Proceedings Volume 11560, 1156004 (2020) https://doi.org/10.1117/12.2574742

KEYWORDS: FT-IR spectroscopy, Methane, Spectroscopy, Gases, Atmospheric monitoring, Atmospheric optics, Atmospheric sensing, Spectral resolution, Solar radiation

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Proceedings Article | 12 November 2020 Paper

Light-emitting-diode Fourier-Transform spectroscopy of H217O between 17 000 and 20 000 cm-1

L. Sinitsa, V. Serdyukov, E. Polovtseva, A. Scherbakov, A. Bykov

Proceedings Volume 11560, 1156007 (2020) https://doi.org/10.1117/12.2575484

KEYWORDS: Absorption, Spectroscopy, Visible radiation, Molecules, Light emitting diodes, Signal to noise ratio, Mirrors, Spectral resolution, Calibration

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Proceedings Article | 12 November 2020 Paper

Line assignment of the 13CH4 ν2 +2ν3 band at low temperature

L. Sinitsa, V. Serdyukov, A. Lugovskoi, I. Baranovskaya

Proceedings Volume 11560, 1156008 (2020) https://doi.org/10.1117/12.2575487

KEYWORDS: Absorption, Spectroscopy, Molecules, Temperature metrology, Methane, Spectral resolution, Calibration, Spectral calibration, Earth's atmosphere

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Proceedings Article | 18 December 2019 Paper

The CH4 absorption spectra at low temperature and in nonopores

L. Sinitsa, A. Lugovskoi, N. Emel`yanov, A. Tanichev

Proceedings Volume 11208, 112080N (2019) https://doi.org/10.1117/12.2540939

KEYWORDS: Methane, Absorption, Molecules, Spectroscopy, Spectral resolution, Earth's atmosphere, Temperature metrology, Molecular interactions, Iterated function systems, Atmospheric monitoring

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Proceedings Article | 13 December 2018 Paper

The 12CH4 absorption spectra at 296 K and 200 K in the range between 6000 and 9000 cm-1

V. Serdyukov, L. Sinitsa, A. Lugovskoi, N. Emel'yanov

Proceedings Volume 10833, 1083309 (2018) https://doi.org/10.1117/12.2504316

KEYWORDS: Methane, Absorption, Spectroscopy, Earth's atmosphere, Molecules, Planets, Spectral resolution, Iterated function systems, Infrared radiation, Atmospheric modeling

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Proceedings Article | 19 November 2015 Paper

Dependence of H2O-N2 broadening coefficients on the vibrational quantum numbers

Leonid Sinitsa, Viktor Serdyukov, Nina Lavrentieva, Anna Dudaryonok

Proceedings Volume 9680, 96800B (2015) https://doi.org/10.1117/12.2205548

KEYWORDS: Spectroscopy, Light emitting diodes, Light sources, Absorption, Fourier transforms, Halogens, Lamps, Atmospheric optics, Chemical species, Nitrogen

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Proceedings Article | 19 November 2015 Paper

Verification of H2O lines from the HITRAN database for remote sensing of the water vapour isotopic composition

N. Rokotyan, V. Zakharov, L. Sinitsa, B. Voronin, N. Lavrentieva, A. Dudaryonok

Proceedings Volume 9680, 96800I (2015) https://doi.org/10.1117/12.2205706

KEYWORDS: Remote sensing, Databases, Spectroscopy, Atmospheric modeling, Temperature metrology, Infrared spectroscopy, Water, Atmospheric physics, Scattering, Atmospheric optics

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Proceedings Article | 19 November 2015 Paper

Light-emitting-diode Fourier-Transform spectroscopy of HD16O between 11200–and 12400 cm-1

L. Sinitsa, V. Serdyukov, E. Polovtseva, A. Shcherbakov, A. Bykov, B. Voronin

Proceedings Volume 9680, 96800G (2015) https://doi.org/10.1117/12.2205589

KEYWORDS: Absorption, Spectroscopy, Molecules, Light emitting diodes, Spectral resolution, Earth's atmosphere, Signal to noise ratio, Calibration, Atmospheric optics, Interferometers

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Proceedings Article | 19 November 2015 Paper

H2O self-broadening coefficients of rotation-vibration lines in the 15 500 - 16 000 cm-1 region

Leonid Sinitsa, Viktor Serdyukov, Anatoly Shcherbakov, Nina Lavrentieva, Anna Dudaryonok

Proceedings Volume 9680, 96800C (2015) https://doi.org/10.1117/12.2205553

KEYWORDS: Spectroscopy, Light emitting diodes, Absorption, Light sources, Molecules, Scattering, Halogens, Lamps, Atmospheric optics, Signal to noise ratio

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Proceedings Article | 19 November 2015 Paper

Study (301)-(000) D2О band in 10200 - 10450 cm-1 spectral region

L. Sinitsa, V. Serdyukov, A. Shcherbakov, A. Sergeeva, M. Miheenko

Proceedings Volume 9680, 96800O (2015) https://doi.org/10.1117/12.2206020

KEYWORDS: Absorption, Light emitting diodes, Signal to noise ratio, Picosecond phenomena, Visible radiation, Ocean optics, Atmospheric optics, Spectroscopy, Spectral resolution, Atmospheric physics

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Proceedings Article | 25 November 2014 Paper

The D2O absorption spectra in the treatment surfaces SiO2 airgel

L. Sinitsa, A. Lugovskoi

Proceedings Volume 9292, 92920N (2014) https://doi.org/10.1117/12.2074812

KEYWORDS: Absorption, Nitrogen, Silica, Molecules, Water, Liquids, Hydrogen, Temperature metrology, Atmospheric optics, Spectroscopy

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Proceedings Article | 25 November 2014 Paper

D2O self-broadening study in 2.5 μ

N. Lavrentieva, A. Lugovskoi, L. Sinitsa, A. Sherbakov, O. Svetlichny

Proceedings Volume 9292, 92920O (2014) https://doi.org/10.1117/12.2074813

KEYWORDS: Absorption, Spectroscopy, Spectral resolution, Molecules, Atmospheric optics, Fourier transforms, Atmospheric physics, Water, Temperature metrology, Particles

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Proceedings Article | 25 November 2014 Paper

H216O absorption spectrum between 22250 and 22800 cm-1: Fourier transform spectroscopy with bright light source

V. Serduykov, L. Sinitsa, S. Vasil’chenko, A. Bykov, T. Kruglova, E. Polovtseva, A. Scherbakov

Proceedings Volume 9292, 92920K (2014) https://doi.org/10.1117/12.2075383

KEYWORDS: Absorption, Light emitting diodes, Spectroscopy, Visible radiation, Light sources, Signal to noise ratio, Atmospheric physics, Fourier transforms, Ocean optics, Fourier spectroscopy

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Proceedings Article | 25 November 2014 Paper

Fourier-transform absorption spectrum of H2O in the region of 15500–16000 cm-1

L. Sinitsa, V. Serduykov, S. Vasilchenko, A. Bykov, A. Shcherbakov, E. Polovtseva, K. Kalinin

Proceedings Volume 9292, 92920J (2014) https://doi.org/10.1117/12.2075169

KEYWORDS: Absorption, Spectroscopy, Light emitting diodes, Data centers, Signal to noise ratio, Ocean optics, Visible radiation, Atmospheric optics, Temperature metrology, Spectral resolution

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Proceedings Article | 27 November 2012 Paper

Ground-based spectroscopic measurements of atmospheric oxygen complexes (O2)2

S. Vasilchenko, L. Sinitsa, V. Serdyukov, B. Voronin, E. Polovtseva

Proceedings Volume 8696, 869603 (2012) https://doi.org/10.1117/12.2008450

KEYWORDS: Oxygen, Ozone, Absorption, Spectroscopy, Atmospheric optics, Spectroscopic atmospheric monitoring techniques, Fourier transforms, Earth's atmosphere, Atmospheric modeling, Visible radiation

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Proceedings Article | 22 April 2008 Paper

H2O line shift measurements in the 1.06 u region

T. Petrova, L. Sinitsa, A. Solodov

Proceedings Volume 6936, 693602 (2008) https://doi.org/10.1117/12.783034

KEYWORDS: Absorption, Spectroscopy, Interferometers, Argon, Gases, Oxygen, Krypton, Laser spectroscopy, Pulsed laser operation, Xenon

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Proceedings Article | 12 December 2006 Paper

Water vapor spectra at temperature of 2000-3000 K in the range 2000-12000cm-1

V. Serdyukov, L. Sinitsa, N. Yu. Bouldyrev

Proceedings Volume 6580, 65800A (2006) https://doi.org/10.1117/12.724851

KEYWORDS: Absorption, Spectroscopy, Plasma, Molecules, Spectral resolution, Atmospheric plasma, Fourier transforms, Laser spectroscopy, Atmospheric optics, Resonators

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Proceedings Article | 12 December 2006 Paper

Distributed information system on molecular spectroscopy

A. Bykov, A. Fazliev, A. Kozodoev, A. Privezentsev, L. Sinitsa, M. Tonkov, N. Filippov, M. Yu. Tretyakov

Proceedings Volume 6580, 65800W (2006) https://doi.org/10.1117/12.724944

KEYWORDS: Molecular spectroscopy, Absorption, Molecules, Distributed computing, Data modeling, Spectroscopy, Interfaces, Thermodynamics, Visualization, Infrared radiation

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Proceedings Article | 15 December 2004 Paper

Hydrogen sulfide absorption spectrum in the 8400 - 8900 cm-1 spectral region

L. Brown, O. Naumenko, E. Polovtseva, Leonid Sinitsa

Proceedings Volume 5743, (2004) https://doi.org/10.1117/12.606253

KEYWORDS: Absorption, Hydrogen, Fourier transforms, Atmospheric optics, Molecules, Distortion, Spectroscopy, Spectrum analysis, Atmospheric chemistry, Observatories

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Proceedings Article | 27 February 2004 Paper

Absorption spectrum of H2S between 7200 and 7890 cm-1

L. Brown, O. Naumenko, E. Polovtseva, Leonid Sinitsa

Proceedings Volume 5396, (2004) https://doi.org/10.1117/12.548211

KEYWORDS: Absorption, Atmospheric optics, Hydrogen, Atmospheric propagation, Molybdenum, Fourier transforms, Spectroscopy, Observatories, Atmospheric physics, Distortion

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Proceedings Article | 12 January 2004 Paper

Hydrogen sulfide absorption spectrum in the 5700-6600 cm-1 spectral region

L. Brown, O. Naumenko, E. Polovtseva, Leonid Sinitsa

Proceedings Volume 5311, (2004) https://doi.org/10.1117/12.545192

KEYWORDS: Absorption, Hydrogen, Distortion, Molecules, Fourier transforms, Spectroscopy, Atmospheric chemistry, Planets, Molecular interactions, Molecular spectroscopy

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Proceedings Article | 12 January 2004 Paper

Grating polychromator with a multichannel photodetector

T. Petrova, Leonid Sinitsa

Proceedings Volume 5311, (2004) https://doi.org/10.1117/12.545717

KEYWORDS: Spectroscopy, Absorption, Photodetectors, Spectral resolution, Diffraction gratings, Diffraction, Charge-coupled devices, Neon, Visible radiation, Interference (communication)

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Proceedings Article | 19 March 2002 Paper

Intracavity laser spectroscopy of molecules in low-temperature plasma

Leonid Sinitsa, T. Petrova, V. Serdukov, Yu. Poplavskii, Vladimir Klimkin

Proceedings Volume 4460, (2002) https://doi.org/10.1117/12.459398

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Proceedings Article | 28 February 2002 Paper

High-temperature spectrum of water vapor in the 1.2 spectral region

T. Petrova, V. Serdyukov, Leonid Sinitsa

Proceedings Volume 4678, (2002) https://doi.org/10.1117/12.458466

KEYWORDS: Electroluminescence, Laser spectroscopy, Spectroscopy, Absorption, Lithium, Spectral resolution, Atmospheric optics, Spectrum analysis, Molecules, Neodymium glass lasers

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Proceedings Article | 28 February 2002 Paper

Broadening and shifting coefficients, and temperature exponents for CO2 lines

Alexander Bykov, N. Lavrentjeva, Leonid Sinitsa

Proceedings Volume 4678, (2002) https://doi.org/10.1117/12.458456

KEYWORDS: Carbon dioxide, Databases, Spectroscopy, Nitrogen, Temperature metrology, Scattering, Molecules, Polarizability, Atmospheric optics, Atmospheric physics

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Proceedings Article | 25 January 2000 Paper

Intracavity laser spectroscopy

Leonid Sinitsa

Proceedings Volume 4063, (2000) https://doi.org/10.1117/12.375379

KEYWORDS: Absorption, Spectroscopy, Laser spectroscopy, Resonators, Dye lasers, Pulsed laser operation, Laser resonators, Chemical reactions, Atmospheric optics, Spectral resolution

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Proceedings Article | 13 January 1999 Paper

Reanalysis of water-vapor high-resolution spectrum in 13200- to 16500-cm-1 region

Alexander Bykov, O. Naumenko, Leonid Sinitsa, B. Voronin, Claude Camy-Peyret, Jean-Marie Flaude, J.-Y. Mandin

Proceedings Volume 3583, (1999) https://doi.org/10.1117/12.337001

KEYWORDS: Absorption, Spectroscopy, Earth's atmosphere, Spectrum analysis, Analytical research, Atmospheric optics, Solar radiation, Distortion, Molecules, Software

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Proceedings Article | 13 January 1999 Paper

Collision narrowing of unresolved H2O doublets

Ch. Claveau, Alain Valentin, Victor Kochanov, V. Saveliev, Leonid Sinitsa

Proceedings Volume 3583, (1999) https://doi.org/10.1117/12.336998

KEYWORDS: Molecules, Spectroscopy, Absorption, Fourier transforms, Data modeling, Nitrogen, Doppler effect, Autoregressive models, Polarization, Oxygen

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Proceedings Article | 13 January 1999 Paper

Measured and calculated line broadening coefficients induced by nitrogen pressure in the water-vapor (010)-(000) band

Alain Valentin, Ch. Claveau, Alexander Bykov, N. Lavrentieva, V. Saveliev, Leonid Sinitsa

Proceedings Volume 3583, (1999) https://doi.org/10.1117/12.336997

KEYWORDS: Absorption, Nitrogen, Temperature metrology, Interferometers, Modulation, Spectroscopy, Spectral resolution, Distortion, Doppler effect, Fourier transforms

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Proceedings Article | 13 March 1998 Paper

Intracavity laser spectroscopy of highly excited molecular states

Leonid Sinitsa

Proceedings Volume 3342, (1998) https://doi.org/10.1117/12.302463

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Recent years there appeared many experimental and theoretical studies of highly excited vibrational states of small polyatomic molecules (Refs. (1 -4) and references therein). These studies have been stimulated by current interest in intramolecular kinetics, photoselective chemistry, and atmospheric optics. The investigation of highly excited vibrationrotational states has become important for searching a quantum analog of classic chaotic motion, classic-quantum correspondence, nonlinear resonance studies and for various application in the laser chemistry, environment, atmospheric optics, and astrophysics. Rotational-vibrational lines caused by transitions to excited vibrational states (energy is larger than 7000 cm') are very weak, their strengths, as a rule, are 5 -7 order of magnitude less than line strengths of fundamental bands. Therefore, high sensitive spectrometers must be used to record these weak bands. Intracavity laser spectrometers due to their high sensitivity to absorption become one of the powerful tools for studying highly excited molecular states. The method of broad-band Intracavity Laser (ICL) Spectroscopy consists of quenching the laser emission at the absorption-line frequencies of the species placed in a broad-band laser cavity. In this case the laser emission spectrum has sharp dips at the frequencies of absorption lines, which can be recorded with an ordinary spectroscopic instrumentation. In the intracavity laser spectroscopy a laser itself is a nonlinear detector of weak absorption. The laser imitates a multipass absorption cell, but with much greater effective length Leff Of the absorbing layer than in a simple multipass cell where it is limited by radiation losses on mirrors. In this case Leff S proportional to the duration t of continuous generation in the region of an absorption line under study. ICL -spectroscopy was widely used to various applications some of them are described in the monograph5 and in other papers of the present issue. One of the most effective applications of ICL - spectroscopy is study of weak molecular spectra caused by transitions to highly excited states. This paper summarized investigation of highly excited molecular states using the intracavity laser spectroscopy.

Proceedings Article | 13 March 1998 Paper

Intracavity laser spectroscopy using dispersive and dynamic resonators

Leonid Sinitsa, Michail Makogon, S. Luk'yanenko

Proceedings Volume 3342, (1998) https://doi.org/10.1117/12.302461

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The method of broad-band Intracavity Laser (ICL) Spectroscopy suggested in 1970 [1] consists of quenching the laser emission at the absorption-line frequencies of the species placed in a broad-band laser cavity, the generation band width of such a laser being much greater than the half-width of spectral line studied. In this case the laser emission spectrum has sharp dips at the frequencies of absorption lines, which can be recorded with an ordinary spectroscopic instrumentation. In the intracavity laser spectroscopy a laser itself is a nonlinear detector of a weak absorption and therefore the parameters of an intracavity spectrometer are first of all determined by the mechanism of the lasing process. The most important are the resonator mechanism caused by multipass travelling of radiation during the process ofgeneration and the threshold character oflasing process. The models describing the formation of a dip in the laser generation spectrum [2-8] can be divided into two groups. The first one asumes high sensitivity of the ICL-spectrscopy to be due to the threshold mechanism for which it is supposed the laser system is in a stationary stable state and all the parameters determining the sensitivity of the intracavity absorption are constant in time [7-8]. These models predict a strong influence of the spatial inhomogeneity of the inversion decay and a sharp increase of the ICL-spectrometer sensitivity near the generation threshold. The second group of the models is based on the assumption that even cw multimode lasers never reach a stable state of generation due to its breaks at a mode caused by different perturbation mechanisms, the life time of a mode being the basic quantity which determines the ICL-spectrometer sensitivity (so called resonator mechnism). Time sweep of the laser emission spectra confirm the fact that longitudinal modes of a cw laser have a fmite life time [9]. The analysis ofFourier spectra ofsuch a laser has revealed that at high spectral power density single modes oscillate at about 100 kHz frequency which corresponds to a 10 ts lifetime of a mode [10]. The decrease of the spectral power density results in the increase of a mode's lifetime, that in turn causes the increase of the ICLspectrometer sensitivity near the generation threshold. Experiments carried out under careftilly controlled conditions showed that the depth of a dip in the intracavity spectrum increases exponentially with the increase of mode's life time.9 This convicingly shows the validity of the resonator mechanism. The resonator mechnism allows one to explain the possibility of recording absorption coefficients as low as Kmin 1010...l01 'cm' during a 0.1 s time interval. As has been shown in Ref. 1 1 detection limit of ICLspectrometer based on broadband ranning wave dye laser is determined by quantum nature of radiation. However, it is only possible if the frequency variations of the laser gain coefficient in the vicinity of an absorption line is less than Kmin. The spectral stability of the gain coefficient is, in turn, determined by the broadening mecahnism in the active medium, i.e. by the ratio ofthe width ofhomogeneous amplification contour (or frequency filter width in resonator) to an absorption line halfwidth. The simplest way of excluding the frequency variation of gain coefficient is decreasing of the numbers of resonator optical elements. In that case the resolnator scheme becomes very simple and consists of 2 mirrors and an active element. Simultaneously, such simplicity decreases the spectral range of the spectrometer, so generation band covers only 20-30% ofgain profile width. The increase ofthe spectral tunable region using dispersive resonator leads to decreasing of the spectrometer sensitivity, so a scheme of the resonator of the ICL-spectrometer is determined by concrete task of investigation. Begining from 1970 the method of ICL-spectroscopy has been extensively developing and now there are about 500 papers in this field including several reviews13'7, devoted to the analysis of sensitivity of ICL-spectroscopy to the determination of quantitative information and to use of different schemes of the spectrometers. There was comprehensive analysis of the ICL-spectrometers for the aim of obtaining quantitative information performed at the Institute of Atmospheric Optics beginning 1972 when first ruby laser ICL-spectrometer had been designed here.12 It includes: 1) design of a complex of ICL-spectrometers based on Nd-glass, ruby, dye, and color 22 center lasers; 2) determination of absorption line parameters; 3) development of efective methods for elimination of spurious selection; 4) use of dispersive resonator in ICLspewometers. Obtained results were summarized in the monograph "Intracavity laser spectroscopy. Method and application" which was published in Russian in 1985. ' This monograph is the only monograph on Intracavity laser spectroscopy in the world but scientists abroad the Russia practically have no information on it. In this paper the main materials of the monograph are presented and the last results in ICLspectroscopy obtained at the Institute of Atmospheric Optics and at others scientific centers during last 10 years are su.mmurised.