A self-consistent model for the discharge kinetics in a high-repetition-rate copper-vapor laser

Carman, Robert J.; Brown, Daniel J.; Piper, James A.

doi:10.1109/3.301652

Cited by 104 publications

(47 citation statements)

References 52 publications

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“…The results obtained are in a fair agreement with the self-consistent models developed for NPLD in Ne-Cu and Ne-CuBr lasers [1,2], as well as to a certain extent with the time-resolved space-averaged electron temperature presented in figure 5, which was obtained by time-resolved measurement of the electrical discharge parameters, such as tube voltage and discharge current [7]. …”

Section: 25 1240supporting

confidence: 87%

“…It is very important for gas-discharge laser physics, gaseous discharges, plasma technologies, gas-discharge mass spectroscopy, absorption and emission spectroscopy and plasma in general. The electron temperature determines thoroughly the characteristic constants for elastic and inelastic electron-atom and electron-ion collisions, as well as the three-body electron-ion recombination [1,2]. In particular for gas discharge lasers, the electron temperature directly influences the formation of the population inversion with the abovementioned processes or indirectly through heavy particles' interaction, such as asymmetric charge transfer, Penning ionization, etc.…”

Section: Introductionmentioning

confidence: 99%

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Determination of space-time resolved electron temperature in nanosecond pulsed longitudinal discharge in various noble gases and discharge tube constructions

Temelkov

Slaveeva

Chernogorova

2016

J. Phys.: Conf. Ser.

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Section: 25 1240supporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Determination of space-time resolved electron temperature in nanosecond pulsed longitudinal discharge in various noble gases and discharge tube constructions

Temelkov

Slaveeva

Chernogorova

2016

J. Phys.: Conf. Ser.

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“…3) almost constant value of n after the end of an excitation pulse for several s and then decrease of it as in and 21 3, 4, 5 for all radial positions except on-axis.…”

Section: Discussion Of the Resultsmentioning

confidence: 74%

Electron density measurements in copper vapor lasers

Petrash

2000

International Conference on Atomic and Molecular Pulsed Lasers III

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A critical overview of the results of electron density measurements in copper vapor lasers is presented. There are considerable contradictions between the results of measurements made by different methods especially between the results concerning temporal behavior of electron density between excitation pulses. Possible reasons of these contradictions are discussed. The method of electron density measurement based on atomic hydrogen Balmer lines broadening is considered in greater detail. Possible nature of the Balmer lines emission under the conditions of copper vapor laser operation and processes of the lines broadening are discussed.

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“…This is by no means the only limiting factor for the energy characteristics of lasers on RM transitions. Rapid deexcitation of resonance states of atoms due to stepwise ionization processes is observed at the leading edge of the excitation pulse [7][8][9]. This causes saturation of the upper laser level population during the excitation pulse [10,11] and sets an upper bound on the lasing energy, while being responsible for a critical lower (metastable) laser level population density N cr for which the population inversion in the active laser medium is not created [12]:…”

Section: Processes Limiting the Pulse-repetition Rates And Energy Chamentioning

confidence: 99%

The strontium-vapor laser pumping efficiency under running-wave excitation

et al. 2008

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UDC 621.373.535The effect of the design features of the gas-discharge tube on the processes proceeding in the discharge circuit of a metal-vapor laser has been investigated. The position of electrodes in the gas-discharge tube has been found to significantly affect the processes at work in the discharge circuit and the energy characteristics of the laser. For instance, gas-discharge tubes with electrodes placed in the hot region of the discharge channel are typified by high metastable-population rates at the leading edge of the excitation pulse, whereas with electrodes positioned in cold buffer regions, the leading edge of the voltage pulse across the resistive component of the tube impedance is seen to peak. Conditions for running-wave generation in the active media of lasers on self-terminated transitions of metal atoms and the running-wave use efficiency for laser pumping are discussed, considering a strontium-vapor laser as an illustration. It is shown that the running wave is generated as the result of the breakdown in the anode end of the gas-discharge tube and is maintained by the energy stored in the capacitive component of the impedance of the gas-discharge tube. The lasing pulse duration under running-wave excitation corresponds to the time it takes an ionization wave to propagate from the anode to the cathode of the gas-discharge tube, with pumping efficiency being ~6-8% for a strontium-vapor laser. The average lasing power varies within 10-15% depending on whether the totally reflecting cavity mirror is placed near the anode or the cathode of the tube.

show abstract

A self-consistent model for the discharge kinetics in a high-repetition-rate copper-vapor laser

Cited by 104 publications

References 52 publications

Determination of space-time resolved electron temperature in nanosecond pulsed longitudinal discharge in various noble gases and discharge tube constructions

Determination of space-time resolved electron temperature in nanosecond pulsed longitudinal discharge in various noble gases and discharge tube constructions

Electron density measurements in copper vapor lasers

The strontium-vapor laser pumping efficiency under running-wave excitation

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