Transversely excited CO<sub>2</sub>lidar laser tunable over lines of regular and nontraditional bands

Горобец, В. А.; Petukhov, V. O.; Tochitskii, S. Ya.; Churakov, V. V.

doi:10.1070/qe1995v025n05abeh000395

Cited by 12 publications

(12 citation statements)

References 4 publications

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“…The laser characteristics have been measured on an optic bench using traditional techniques (Gorobets et al, 1995). We first consider the spectral and energy parameters.…”

Section: Output Laser Parametersmentioning

confidence: 99%

“…The laser beam was modulated by the chapter and fed to a light detector cooled by liquid nitrogen (Gorobets et al, 1995). The detector's electric signal was processed by a lock-in amplifier, digitized and sent to a computer.…”

Section: Instability Of the Output Laser Powermentioning

confidence: 99%

“…Experiments were performed with a UV-preionized TEA module specialty developed for lidar systems (Gorobets et al, 1995). The module had a working volume of 70 × 2.5 × 2 cm.…”

Section: Active Medium Optimization Of the 12 C 18 O 2 Lasermentioning

confidence: 99%

“…The main charge and the UV preionization were energized from a battery of low-inductance capacitors with a total capacitance of 0.25 µF, charged to a voltage of 30 kV. The design and of the laser and its performance are described in detail in (Gorobets et al, 1995). A two-transmission three-mirror resonator was used to increase the length of the active medium to 140 cm.…”

Section: Effective Oscillation Of a Cw Comentioning

confidence: 99%

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CO2 Lasing on Non-Traditional Bands

Petukhov¹,

Горобец²

2012

CO2 Laser - Optimisation and Application

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“…The laser characteristics have been measured on an optic bench using traditional techniques (Gorobets et al, 1995). We first consider the spectral and energy parameters.…”

Section: Output Laser Parametersmentioning

confidence: 99%

Section: Instability Of the Output Laser Powermentioning

confidence: 99%

“…Experiments were performed with a UV-preionized TEA module specialty developed for lidar systems (Gorobets et al, 1995). The module had a working volume of 70 × 2.5 × 2 cm.…”

Section: Active Medium Optimization Of the 12 C 18 O 2 Lasermentioning

confidence: 99%

Section: Effective Oscillation Of a Cw Comentioning

confidence: 99%

See 2 more Smart Citations

CO2 Lasing on Non-Traditional Bands

Petukhov¹,

Горобец²

2012

CO2 Laser - Optimisation and Application

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“…A detailed description of the TEA CO 2 laser, the prototype of the lidar apparatus complex, and also the techniques of measuring and determining concentrations of atmospheric gases is presented in [4][5][6]. We will briefly consider the basic characteristics and most important features of the equipment and techniques used.…”

mentioning

confidence: 99%

Trace Detection of Low Concentrations of Ozone Using a CO2 Laser with Automatic Tuning over the Spectrum

2005

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A technique of detection of ozone, using a CO 2 laser with rapid automated tuning over 8-10 generation lines in the 9.4-9.6-µm spectral range, has been developed. Its experimental verification has shown a higher accuracy of detecting low concentrations of O 3 in comparison with the traditional technique of differential absorption on two lines (on-line and off-line). Using the technique suggested, the content of ozone in the vicinity of city roads with heavy traffic has been measured.

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Absorption by CS2 molecules on “hot” band emission lines from a TEA CO2 laser

2007

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We have measured absorption of emission from a TEA CO 2 laser, lasing on hot band lines, in pure CS 2 and a mixture of CS 2 with air, and we have determined the optimal lines for optical excitation. Numerical modeling has shown that as the peak intensity of the pump radiation is increased, we observe absorption saturation, the extent of which decreases as the pressure increases. The major factor responsible for absorption saturation is the "rotational bottleneck" effect. Depending on the peak intensity of the radiation, addition of a buffer gas can lead to an increase or decrease in the absorption.Key words: CS 2 absorption, TEA CO 2 laser, hot band line. Introduction.In recent years, considerable attention has been focused on development of sources of highpower coherent radiation in the terahertz (THz) range. Such sources are promising for remote detection of explosives hidden under clothing, nondestructive testing of the quality of parts and structures, all-weather navigation systems, systems for medical, biological, and scientific applications etc. (see, for example, [1-4] and references cited therein). However, to date the terahertz range of the spectrum, "at the junction" between laser physics and microwave electronics, is insufficiently "provisioned" with coherent radiation sources from the standpoint of practical demands on the required set of output parameters.Earlier [5,6], the possibility was considered for obtaining high-power terahertz radiation using a gaseous active medium containing CS 2 molecules. In this case, lasing of terahertz radiation is possible, for example, on the vibrational-rotational lines of the 00 0 1-12 0 0 band (117 µm or 2.56 THz). For optical pumping of the vibrational-rotational transitions in the CS 2 molecule in the 10 0 0-00 0 1 channel (11.4 µm), it has been suggested to use pulsed or cw CO 2 lasers which are tunable over a broad spectral range and capable of efficiently lasing on 01 1 1-11 1 0 hot band lines (11.3 µm) [7]. This method, in contrast to "submillimeter" lasers, where lasing occurs between rotational sublevels of the same vibrational state, makes possible a major increase in the power and energy of the terahertz radiation. For this purpose, we especially need to select the parameters optimal for optical pumping.This work was devoted to studying the feasibility of efficient pumping of CS 2 molecules by the emission of a pulsed TEA CO 2 laser, lasing on hot band lines, with the aim of designing a laser in the terahertz range.Block diagram of the experimental setup. Absorption by the CS 2 molecules was measured from the transmission of the pump radiation through a cuvet with the active medium. Fig. 1 shows the block diagram of the experimental setup. As the pump source, we used TEA CO 2 laser 1, tunable on the 01 1 1-11 1 0 hot band lines in the 11.00-11.35 µm range with output energy ~0.5-0.2 J respectively. The stability of the output energy was ~5% [8]. The cavity of the TEA laser was formed by a totally reflecting mirror built into the rear cover of the laser a...

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Transversely excited CO₂lidar laser tunable over lines of regular and nontraditional bands

Cited by 12 publications

References 4 publications

CO2 Lasing on Non-Traditional Bands

CO2 Lasing on Non-Traditional Bands

Trace Detection of Low Concentrations of Ozone Using a CO2 Laser with Automatic Tuning over the Spectrum

Absorption by CS2 molecules on “hot” band emission lines from a TEA CO2 laser

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Transversely excited CO2lidar laser tunable over lines of regular and nontraditional bands

Cited by 12 publications

References 4 publications

CO2 Lasing on Non-Traditional Bands

CO2 Lasing on Non-Traditional Bands

Trace Detection of Low Concentrations of Ozone Using a CO2 Laser with Automatic Tuning over the Spectrum

Absorption by CS2 molecules on “hot” band emission lines from a TEA CO2 laser

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Transversely excited CO₂lidar laser tunable over lines of regular and nontraditional bands