Development of a new CW single-line CO laser on thev′=1→v″=0 band

Wu, Benny; George, T.; Schneider, M.; Urban, W.; Nelles, B.

doi:10.1007/bf00750945

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…1. With some minor changes the liquid-nitrogen-cooled CO laser tube is based on the design of Wu et al 8 and has been constructed in our workshop. When the gas mixture was optimized for an optimal laser power on a weak laser line ͓P͑10͒ 32 , 1304.97 cm ͒.…”

Section: Co Lasermentioning

confidence: 99%

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Intracavity CO laser photoacoustic trace gas detection: cyclic CH_4, H_2O and CO_2 emission by cockroaches and scarab beetles

et al. 1996

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A liquid-nitrogen-cooled CO laser and an intracavity resonant photoacoustic cell are employed to monitor trace gases. The setup was designed to monitor trace gas emissions of biological samples on line. The arrangement offers the possibility to measure gases at the 10 9 by volume ͑ppbv͒ level ͑e.g., CH 4 , H 2 O͒ and to detect rapid changes in trace gas emission. A detection limit of 1 ppbv for CH 4 in N 2 equivalent to a minimal detectable absorption of 3 ϫ 10 Ϫ9 cm Ϫ1 can be achieved. Because of the kinetic cooling effect we lowered the detection limit for CH 4 in air is decreased to 10 ppbv. We used the instrument in a first application to measure the CH 4 and H 2 O emission of individual cockroaches and scarab beetles. These emissions could be correlated with CO 2 emissions that were recorded simultaneously with an infrared gas analyzer. Characteristic breathing patterns of the insects could be observed; unexpectedly methane was also found to be released.

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Section: Co Lasermentioning

confidence: 99%

“…This configuration was more advantageous than the one described previously. 8,11 Only one high-voltage power supply was necessary and, in addition, the intracavity PA cell and the chopper could be positioned close to the windows of the laser since the outer anodes were at ground potential.…”

Section: Co Lasermentioning

confidence: 99%

Intracavity CO laser photoacoustic trace gas detection: cyclic CH_4, H_2O and CO_2 emission by cockroaches and scarab beetles

et al. 1996

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“…The spectral range in which CO laser lines are localized (4.7-8.2 μm for fundamental vibrational transitions [3,4] and 2.5-4.2 μm for overtone transitions [5,6]) is most informative from the viewpoint of laser sensing of minor gaseous components (MGC) (H 2 O, CO 2 , CH 4 , NO 2 , N 2 O, etc.) in the atmosphere and heavy gaseous pollutants, toxins, explosives, and drags [7].…”

Section: Introductionmentioning

confidence: 99%

Wideband CO laser in problems of laser sensing of minor gaseous components in the atmosphere

et al. 2008

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In the present work it is demonstrated that a wideband CO laser operating at fundamental and overtone vibrational transitions is a promising source of laser radiation for remote laser sensing of the atmosphere. A compact slab RF-discharge CO laser has been designed. The optimal operating conditions are determined for this CO laser. In experiments, the maximum average output laser power was ~12 W for lasing efficiency of ~14%. Under fixed experimental conditions, stable lasing (with fluctuations of the output laser characteristics ≤5%) was observed during more than one hour, which suggests that we first excited the sealed-off mode of cryogenic slab RF-discharge CO laser. The frequency-selective mode was first obtained for this laser. Wavelengths for sensing of nitrous oxide, nitrogen dioxide, methane, formaldehyde, and some other gases on near-ground propagation paths are determined. Our experiments and calculations confirm that this CO laser is promising for laser gas analysis.

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“…Although the technique for obtaining Q-switch mode with a rotating mirror has been known for a long time, it is still relevant for CO lasers, because the laser can operate in a wide spectral range (from 4.6 to 8.7 microns [7,8]), and the reflection of metal mirrors slightly depends on wavelengths in this wavelength region. Also, Q-switching with rotating mirror objectively is the simplest technique.…”

Section: Introductionmentioning

confidence: 99%

Q-switched slab RF discharge CO laser

et al. 2017

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A compact repetitively pulsed cryogenically cooled slab RF discharge CO laser with double path V-type laser resonator equipped with external Q-switching system based on rotating mirror was developed and studied. The laser produced mid-IR (λ ~ 5-7 µm) radiation pulses of ~1 ÷ 2 µs duration (FWHM), peak power up to ~3 kW, and pulse repetition rate up to 130 Hz. Averaged output laser power reached 0.5 W, the laser spectrum consisted of ~80 laser lines with individual peak power up to 80 W.

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Development of a new CW single-line CO laser on thev′=1→v″=0 band

Cited by 11 publications

References 12 publications

Intracavity CO laser photoacoustic trace gas detection: cyclic CH_4, H_2O and CO_2 emission by cockroaches and scarab beetles

Intracavity CO laser photoacoustic trace gas detection: cyclic CH_4, H_2O and CO_2 emission by cockroaches and scarab beetles

Wideband CO laser in problems of laser sensing of minor gaseous components in the atmosphere

Q-switched slab RF discharge CO laser

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