An Integrated Nanosecond Pulse Generator and Laser

Andersson, H.

doi:10.1088/0031-8949/4/4-5/010

Cited by 14 publications

(3 citation statements)

References 7 publications

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“…The experimental procedure was similar to that used in [14]. The stimulated emission was measured using an ITT 4000 S-20 vacuum photodiode after attenuation in neutral density filters.…”

Section: Methodsmentioning

confidence: 99%

Time-resolved analysis of a transversely excited nitrogen laser

Andersson¹,

Borgstrom²

1974

Opto-electronics

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Time-resolved measurements have been made of stimulated and spontaneous emission, voltage and current in a transversely excited nitrogen laser giving 50 kW peak power at 337 nm. The excitation rates to the laser levels were calculated from literature data using the results of electrical measurements, a check being obtained from measurements of spontaneous emission. The Druyvesteyn electron energy distribution gives better agreement with measurements than the Maxwellian. Laser pulses were calculated by solving numerically the space-dependent rate equations for population and photon number densities. Recent literature data on the transition probabilities and the pressure-dependence of the lifetime of the upper laser level were introduced into the calculations. The formation of a thin discharge channel was found to be essential for the high gain achieved. The onset of stimulated emission as observed on oscilloscope pictures was found to have a delay of the order of 1 ns in relation to the onset of current and spontaneous emission. This delay was confirmed by the calculations and explained as the time required to build up the population inversion and radiation density.

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“…The experimental procedure was similar to that used in [14]. The stimulated emission was measured using an ITT 4000 S-20 vacuum photodiode after attenuation in neutral density filters.…”

Section: Methodsmentioning

confidence: 99%

Time-resolved analysis of a transversely excited nitrogen laser

Andersson¹,

Borgstrom²

1974

Opto-electronics

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“…Capillary discharge in N 2 :O 2 mixtures was studied as active media for non-cavity lasers working on the second positive system of molecular nitrogen. The amplitudes of the nanosecond pulses varied from 30 kV [4,5] to 300 kV [6,7], and the pressures were between 2 and 35 Torr. Electrical current reached tenshundreds of amperes.…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, in majority of studies, including laser-related papers [4][5][6][7], common knowledge about gas discharges at relatively low specific deposited energy is used to treat the obtained data. In particular, 'conventional' quenching rates for N 2 (C Π u 3 ) are taken to derive a population of electronically excited states.…”

Section: Introductionmentioning

confidence: 99%

Long-lived plasma and fast quenching of N₂(C³Π_u) by electrons in the afterglow of a nanosecond capillary discharge in nitrogen

Lepikhin

Klochko

Попов

et al. 2016

Plasma Sources Sci. Technol.

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Quenching of electronically excited nitrogen state, ( )can be explained by quenching by electrons. Long-lived plasma at time scale of hundreds nanoseconds after the end of the pulse is observed. High electron densities, about 10 14 cm −3 at 27 mbar, are sustained by reactions of associative ionization. Kinetic 1D numerical modeling and comparison of calculated results with experimentally measured electric fields in the second high-voltage pulse 250 ns after the initial pulse, and electron density measurements in the afterglow confirm the validity of the suggested mechanism.

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Dependence of peak power and pulse width for UV N2 superradiant pulses on operating conditions in a coaxial laser device

Theiss

1973

Optics Communications

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An Integrated Nanosecond Pulse Generator and Laser

Abstract: An integrated nanosecond pulse generator and laser.

Cited by 14 publications

References 7 publications

Time-resolved analysis of a transversely excited nitrogen laser

Time-resolved analysis of a transversely excited nitrogen laser

Long-lived plasma and fast quenching of N₂(C³Π_u) by electrons in the afterglow of a nanosecond capillary discharge in nitrogen

Dependence of peak power and pulse width for UV N2 superradiant pulses on operating conditions in a coaxial laser device

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An Integrated Nanosecond Pulse Generator and Laser

Abstract: An integrated nanosecond pulse generator and laser.

Cited by 14 publications

References 7 publications

Time-resolved analysis of a transversely excited nitrogen laser

Time-resolved analysis of a transversely excited nitrogen laser

Long-lived plasma and fast quenching of N2(C3Πu) by electrons in the afterglow of a nanosecond capillary discharge in nitrogen

Dependence of peak power and pulse width for UV N2 superradiant pulses on operating conditions in a coaxial laser device

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Long-lived plasma and fast quenching of N₂(C³Π_u) by electrons in the afterglow of a nanosecond capillary discharge in nitrogen