Electrical behavior of a Blumlein-line N2 laser

Persephonis, P.

doi:10.1063/1.339442

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…9 as well. In an equivalent RLC discharge circuit here, [25][26][27][28] the equivalent resistance R of the gap is small, using the tted values of R and L of the circuit, the oscillating frequency is approximately reversely proportional to the square root of the capacitance C, which is consistent with the observed results.…”

Section: Discharge Charactersupporting

confidence: 85%

Discharge character and optical emission in a laser ablation nanosecond discharge enhanced silicon plasma

Zhou

Qian

et al. 2013

J. Anal. At. Spectrom.

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Section: Discharge Charactersupporting

confidence: 85%

Discharge character and optical emission in a laser ablation nanosecond discharge enhanced silicon plasma

Zhou

Qian

et al. 2013

J. Anal. At. Spectrom.

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“…The study of the laser tube structure can be divided into two separate parts, the main discharge region and the pre-ionization section. Persephonise et al have modelled the main discharge section of the pulsed gas-laser tube by a time dependent resistor and an inductor in series combination [24][25][26][27][28], They have assumed that in the interelectrode space of the gas laser chamber, a strong source of preionization provides the initial electron number density, which is sufficiently higher than the minimum necessary pre-ionization density for a homogeneous glow discharge.…”

Section: Laser Tube Structure and Its Equivalent Circuitmentioning

confidence: 99%

Theoretical analysis of electrical transient behaviour in TEA CO₂ laser with dielectric corona pre-ionization

Bahrampour¹,

Ganjovi²

2003

J. Phys. D: Appl. Phys.

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In this paper a theoretical model for transient behaviour analysis of the discharge current pulse in the transversely excited atmospheric pressure CO2 laser with dielectric corona pre-ionization is presented. The laser discharge tube is modelled by a non-linear distributed RLC electric circuit. The transmission line method is applied to the non-linear distributed circuit and it is approximated by a lumped non-linear RLC circuit. By this method the governing partial differential equations are reduced to a system of ordinary differential equations. The governing ordinary differential equations of the lumped non-linear RC electric circuit are solved numerically. On the basis of this model the pre-ionization and main discharge energies are evaluated. Our theoretical results are in good agreement with the published experimental observations.

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“…An application of this method was carried out using a N2 laser which has been described elsewhere [4]. …”

Section: Sapplication Of the Methodsmentioning

confidence: 99%

<title>Determination of the electrical characteristics of the discharges in a pulsed gas laser through its current waveforms</title>

et al. 1995

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A method of finding the time dependent resistance and inductance of the discharges in the switch system and laser chamber in pulsed gas lasers is describel in the IDresent work. According to this method the current waveioriri is digtized and the first and second derivative is calculated through a computer. For a certain time instant, substituting the value of the current and its first and second derivative into the integrodifferential equations describing the performance ofthe circuit lOOpS. we forni relationships which connect the values of the resistance and inductance for this particular time instant. Combining relationships originated from very closed adjacent time instants. the values of the resistance and inductance can be found. Scanning the entire time region of the discharge. the time history of the resistances and inductances of the discharges are revealed. Their behavior Shows for the resistances an abrupt drop while for the inductances a sharp peak. both during the formation phase. After that the above characteristic quantities fluctuate slowly around constant values. INTRODUCTIONIn pulsed gas lasers (Excimer, N2. CO. HF, Fetc) there are two electrical discharges. The first in the switch system (thyratron, spark-gap) and the second in the laser chamber. Strictly speaking, these can be symbolized in the laser electric circuit as time dependent resistance and inductance in series combination. These quantities are both considered in some cases constant [I,2] while in other cases the inductance is considered constant and the resistance is parametrized through an exponential drop during the formation phase of the discharge [3]. To date there is no method of finding the resistance and inductance by time. In this paper a method is presented where the time history of the resistance and inductance are revealed elaborating step by step the current waveform through the differential equations governing the performance of the electric circuit. The quantities which can be calculated after that, by time, are the oscillation frequencies, the damping constants, the impedance of the discharges etc. 440 ISPIE Vo/. 2502 0-8194-1860-9/95/$6.00 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/28/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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Electrical behavior of a Blumlein-line N2 laser

Cited by 9 publications

References 12 publications

Discharge character and optical emission in a laser ablation nanosecond discharge enhanced silicon plasma

Discharge character and optical emission in a laser ablation nanosecond discharge enhanced silicon plasma

Theoretical analysis of electrical transient behaviour in TEA CO₂ laser with dielectric corona pre-ionization

<title>Determination of the electrical characteristics of the discharges in a pulsed gas laser through its current waveforms</title>

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Electrical behavior of a Blumlein-line N2 laser

Cited by 9 publications

References 12 publications

Discharge character and optical emission in a laser ablation nanosecond discharge enhanced silicon plasma

Discharge character and optical emission in a laser ablation nanosecond discharge enhanced silicon plasma

Theoretical analysis of electrical transient behaviour in TEA CO2 laser with dielectric corona pre-ionization

<title>Determination of the electrical characteristics of the discharges in a pulsed gas laser through its current waveforms</title>

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Theoretical analysis of electrical transient behaviour in TEA CO₂ laser with dielectric corona pre-ionization