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Browsing Publications by Author "Académie des sciences/Éditions scientifiques et médicales Elsevier SAS, publisher"

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    Capillary discharge tabletop soft X-ray lasers reach new wavelengths and applications
    (Colorado State University. Libraries, 2000) Uspenskii, Y. A., author; Vinogradov, A., author; Artioukov, I. A., author; Ozols, A., author; Kanizay, K., author; Marconi, M., author; Filevich, J., author; Seminario, M., author; Benware, B., author; Frati, M., author; Rocca, Jorge J., author; Académie des sciences/Éditions scientifiques et médicales Elsevier SAS, publisher
    For many years, researchers have envisioned the development of compact high repetition rate tabletop soft X-ray lasers that could be routinely used in application in numerous disciplines. With demonstrated average powers of several mW and mJ-level pulse energy at 46.9 nm, capillary discharge-pumped lasers are the first compact lasers to reach this goal. In this paper we summarize the development status of high repetition rate tabletop soft X-ray lasers based on capillary discharge excitation, and give examples of their successful use in several applications. Results of the use of a capillary discharge pumped 46.9 nm laser in dense plasma interferometry, soft X-ray reflectometry for the determination of optical constants, and laser ablation are described. The observation of lasing at 53 nm line in Ne-like Cl with output pulse energy up to 10 μJ is also reported.
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    Collisionally pumped hybrid soft X-ray laser in Ne-like sulphur
    (Colorado State University. Libraries, 2000) Rocca, Jorge J., author; Sandner, Wolfgang, author; Bortolotto, Fulvia, author; Janulewicz, Karol A., author; Nickles, Peter V., author; Académie des sciences/Éditions scientifiques et médicales Elsevier SAS, publisher
    We describe an experiment demonstrating XUV amplification following collisional excitation in a capillary discharge plasma irradiated by a picosecond IR laser pulse. Guiding and temporally resolved transmission of the pump laser beam are also demonstrated and analysed. The short pump laser pulse heated rapidly the electrons producing amplification in the 3p1S0-3s1P1 transition of Ne-like sulphur at 60.84 nm. The estimated gain-length product was equal to 6.8, while the beam divergence reached 2.5 mrad for 30 mm capillary. This new, hybridly pumped collisional soft X-ray laser with the transient gain offers anew way towards efficient table-top XUV sources.