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Träfflista för sökning "L773:1520 8540 OR L773:0740 3224 srt2:(1985-1989)"

Sökning: L773:1520 8540 OR L773:0740 3224 > (1985-1989)

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  • Lacy, R. A, et al. (författare)
  • Photoionization-pumped gain at 185 nm in a laser-ablated indium plasma
  • 1989
  • Ingår i: Journal of the Optical Society of America B: Optical Physics. - 0740-3224. ; 6:6, s. 1209-1216
  • Tidskriftsartikel (refereegranskat)abstract
    • We reportwhat is to our knowledge the first production of gain by inner-shell photoionization of ions. Photoionization of 4d electrons from In$+$ ions created a population inversion on a 185-nm In2$+$ transition. This scheme is an isoelectronic scaling of the 442-nm Cd$+$ laser. A single-pass gain constant of 0.9 {\textpm} 0.3 cm{\textminus}1 over a 0.4-cm path was pumped by soft x rays generated by less than 50 mJ of 1.06-$\mu$m light focused onto a tantalum target. Laser ablation of a liquid-indium target provided a high density (1016 cm{\textminus}3) of ground-state In$+$ ions for this scheme. An indium amplified spontaneous emission laser and a synchronously pumped indium laser oscillator are proposed.
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  • Svanberg, Sune, et al. (författare)
  • Saturation spectroscopy for optically thick atomic samples
  • 1987
  • Ingår i: Journal of the Optical Society of America B: Optical Physics. - 0740-3224. ; 4:4, s. 462-469
  • Tidskriftsartikel (refereegranskat)abstract
    • Doppler-free saturation spectroscopy in the regime of strong pumping intensities and optically thick atomic samples is investigated experimentally and theoretically. It is shown that a very high signal-to-background ratio can be obtained and, at the same time, subnatural linewidths can be reached. Further contrast and linewidth improvements can be attained by supplementing the primary depleted pumping beam with a second pumping beam. By using the signal beam from a first setup as the pumping beam for a second identical arrangement, extreme values for contrast and linewidth should be attainable.
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