Plasma interaction with stimulated emission in a CO2 laser

Tsui, K. H.; Zanon, R.; Couceiro, I B; Massone, C. A.

doi:10.1016/0030-4018(91)90522-f

Cited by 6 publications

(1 citation statement)

References 5 publications

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“…The space-charge instability in the form of voltage spikes, whose appearance is related to the electrode configuration, seems to play an essential part in enhancing the laser output. 2,3 For pulsed gas lasers, the plasma parameters play an equally important role. The excitation voltage pulse which depends on the plasma dispersion properties has the function to pump the laser.…”

Section: Introductionmentioning

confidence: 99%

Plasma impedance and electron density in a pulsed laser channel

Tsui

Cavalcanti

Farias

et al. 1996

Journal of Applied Physics

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Electron density measurement in a rf helium plasma by lasercollision induced fluorescence methodThe representation of plasma impedance of gas laser discharge and spark gap channels by an inductance-capacitance (L p ϪC p ) tank circuit has been useful in describing the frequency response of a pulsed superradiant laser charging circuit. The impedance matching of these plasma channels can lead to resonant narrowing of the laser pulsewidth in superradiant nitrogen lasers. Using fluid equations to model the electron and ion plasmas, the impedance of plasma channels is formulated. This derived impedance supports the phenomenological L p ϪC p tank circuit configuration, and provides the means to calculate the inductance and capacitance in terms of the plasma density and discharge dimensions. Conjugating this model with the pulse width narrowing via plasma impedance matching, the electron density at the very moment of lasing in a superradiant gas laser channel can be estimated by using the measured L p and C p .

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Section: Introductionmentioning

confidence: 99%

Plasma impedance and electron density in a pulsed laser channel

Tsui

Cavalcanti

Farias

et al. 1996

Journal of Applied Physics

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Optimization of the CO₂:N₂:He Ratio in the Active Media of Continuous-Wave Electric-Discharge CO₂Lasers

Невдах

Gandzhali

2004

Journal of Applied Spectroscopy

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Space-charge plasma-circuit instability in cw CO2 laser axial discharge plasmas

Tsui

Massone

1994

Physics of Plasmas

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The intense voltage spikes of about 10 I-ls width in high voltage direct current (dc) axial discharges, particularly, in continuous wave (cw) CO 2 laser systems, are analyzed by a bound plasma model subject to external circuit constraint. The spikes, whose amplitude grows from cathode to anode, are believed to be a manifestation of the convective space-charge instability of the ion acoustic plasma-circuit mode.

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Plasma interaction with stimulated emission in a CO2 laser

Cited by 6 publications

References 5 publications

Plasma impedance and electron density in a pulsed laser channel

Plasma impedance and electron density in a pulsed laser channel

Optimization of the CO₂:N₂:He Ratio in the Active Media of Continuous-Wave Electric-Discharge CO₂Lasers

Space-charge plasma-circuit instability in cw CO2 laser axial discharge plasmas

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Plasma interaction with stimulated emission in a CO2 laser

Cited by 6 publications

References 5 publications

Plasma impedance and electron density in a pulsed laser channel

Plasma impedance and electron density in a pulsed laser channel

Optimization of the CO2:N2:He Ratio in the Active Media of Continuous-Wave Electric-Discharge CO2Lasers

Space-charge plasma-circuit instability in cw CO2 laser axial discharge plasmas

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Optimization of the CO₂:N₂:He Ratio in the Active Media of Continuous-Wave Electric-Discharge CO₂Lasers