Laser beam quality of high pulse repetition frequency excimer lasers

Utéza, O.; Sentís, M.; Delaporte, Ph.; Forestier, B.; Fontaine, Bernard

doi:10.1016/0030-4018(93)90432-5

Cited by 7 publications

(1 citation statement)

References 15 publications

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“…Pressure waves are generated in the laser cavity by the subsequent relaxation of the heated gas [15]. So, local depopulation is induced in the discharge centre influencing negatively the laser radiation, because a better optical quality requires an inhomogeneous rate ρ/ρ < 10 −4 (ρ denotes the density of the neutral particles) [16]. In addition, in the case of the excimer mechanisms in repeating regime and in order to maintain the electrical discharge stability, the ratio ρ/ρ < 10 −2 [17].…”

Section: Introductionmentioning

confidence: 99%

Effects of neutral particle dynamics in the active medium of discharge pumped XeCl lasers

Lamrous

Mezeghrane

Mitiche

et al. 2003

J. Phys. D: Appl. Phys.

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A powerful fluid model to study the role of gas dynamics in a glow discharge considered as an excitation medium for XeCl lasers is presented. This model was employed using a numerical code including four strongly coupled parts: electric circuit equations, electron Boltzmann equation, kinetic equations and conservation equations. The theoretical formalism presented here is based on the two-dimensional Euler equations describing the perfect compressible fluid. The numerical calculations have been carried out considering the single shot regime and neglecting the gas flow. The monotonic upstream centred scheme for conservation laws corrections has been used in order to estimate the exchange flow surrounding the control volume walls. We show that the crossing discharge induces a thermal energy density enhancement located principally in the cavity centre.

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Section: Introductionmentioning

confidence: 99%