Zur Anregung und Emission im N<sub>2</sub>‐Impulsgaslaser

Gundel, Hartmut; Ross, W.

doi:10.1002/andp.19744860307

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…When a high laser power level in the laser medium is reached, the saturation approximation ( N , = NB) becomes valid because the inversion density N , -NB is rapidly decreased by the stimulated emission process. By assuming N, = NB, Guendel and Ross (1974) have calculated that P, can be expressed by where M , defined by Guendel and Ross (1974), is about 1.…”

Section: Measurements On Non-lte Discharges and Discussionmentioning

confidence: 99%

“…These discharges have been widely used, especially for excitation of numerous laser transitions in gases. Theories of pulsed gas lasers, for instance the models developed by Gerry (1965), Ali et aZ(1967) and Guendel and Ross (1974) refer to discharges in uniform electric fields. Bohmeyer et aZ (1977) have shown that the results obtained from measurements on these discharges could be described with a model developed by Guendel (1973).…”

Section: Introductionmentioning

confidence: 99%

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Interferometric measurement of electron density in pulsed laser discharges

Ross¹

1980

J. Phys. D: Appl. Phys.

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A novel set-up for measuring the spatial distribution of electron density in a pulsed discharge is presented. The arrangement consists of a Michelson interferometer and a nitrogen laser pumping a dye laser synchronised with a discharge tube. Measurements accomplished with this set-up have dealt with discharges in non-uniform electric fields used for the excitation of pulsed gas lasers. The results of optical and electric measurements on stable discharges in nitrogen are compared with calculations based upon the assumption of a Maxwellian distribution of electron velocities.

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Section: Measurements On Non-lte Discharges and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interferometric measurement of electron density in pulsed laser discharges

Ross¹

1980

J. Phys. D: Appl. Phys.

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Schwingungsrelaxation und Gasaufheizung bei periodischem Betrieb der Impulslaser‐Gasentladung in Stickstoff

Wojaczek

1984

Contrib Plasma Phys

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InhaltsiibersichtFur eine typische Impulslaser-Gasentladung in ruhendem Stickstoff wird das zeitliche Verhalten der Schwingungstemperatur zwischen zwei Entladungsimpulsen rechnerisch untersucht, wobei eine verallgemeinerte Treanor-Verteilung der Besetzung der Schwingungsniveaus zugrunde gelegt wird. Als Abbauprozesse der Schwingungsenergie werden WandstoBe, VV-und VT-Prozesse berucksichtigt. Es ergeben sich Angaben fiber die Schwingungstemperatur zu Beginn jedes neuen Entladungsimpulses und uber die Gastemperaturerhohung gegeniiber der Rohrwend in Abhangigkeit von der Folgefrequenz. AbschlieRend wird diskutiert, melche Einflusse die erhohten Schwingnngs-nnd Gastemperaturen auf die Leistung des Stickstoff-Impulslcers haben konnen. AbstractFor a typical pulse laser gas discharge in nitrogen without gas streaming, the time variation of the vibration temperature between two pulses is calculated based on a generalized Treanor distribution of the vibration term population. As processes destroying vibration energy, the wall desactivation, VV-and VT-processes are considered. AS results, values of the vibration temperature a t the beginning of the pulse discharge and data for the gas temperature difference between tube wall and axis are presented in dependence on the repetition frequency. Finally is discussed, in which scale the elevated vibration temperature and the gas temperature may influence the power of the nitrogen pulse laser.

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