translate English to French: The results concerning the influence of the laser parameters (frequency, pulse-shape, intensity, etc.) on the relativistic high-order harmonics have been obtained and the conversion efficiency has also been calculated.
La méthode permet de calculer l'influence des paramètres du laser (fréquence, forme de l'impulsion, intensité, etc) sur les harmoniques relativistes d'ordre élevé et d'évaluer l'efficacité de conversion.