The spatial distribution of small signal gain in a segmented hollow cathode discharge laser

T. M. Adamowicz, Z. Donkó, L. Szalai, K. Rózsa, W. Kwaśniewski

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We present measurements of the spatial distribution of the small signal gain in the cross section of a longitudinally segmented hollow cathode discharge. This configuration proved to be the most efficient for pumping different cathode sputtered metal ion laser transitions excited by thermal energy charge transfer reactions. We performed the measurements for the Cu-II 780.8 nm transition for different currents and buffer gas pressures. At higher pressures there are two peaks in the gain distribution nearer to the cathode surface. With increasing current the gain increases faster in the center of the discharge and the gap between the two separate peaks tends to disappear. At the optimum pressure (where the gain is the highest), the gain has a maximum in the center of the discharge. Our results are generally valid for the charge transfer excited cathode sputtered UV metal ion lasers as well. The measured gain values are proportional to the gain of possible continuous VUV laser transitions around 150-160 nm, where the upper level is common with the upper level of the 780.8 nm transition.

Original languageEnglish
Pages (from-to)613-618
Number of pages6
JournalApplied Physics B: Lasers and Optics
Volume65
Issue number4-5
Publication statusPublished - 1997

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hollow cathodes
spatial distribution
lasers
cathodes
metal ions
charge transfer
thermal energy
gas pressure
pumping
buffers
cross sections
configurations

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

Cite this

The spatial distribution of small signal gain in a segmented hollow cathode discharge laser. / Adamowicz, T. M.; Donkó, Z.; Szalai, L.; Rózsa, K.; Kwaśniewski, W.

In: Applied Physics B: Lasers and Optics, Vol. 65, No. 4-5, 1997, p. 613-618.

Research output: Contribution to journalArticle

Adamowicz, TM, Donkó, Z, Szalai, L, Rózsa, K & Kwaśniewski, W 1997, 'The spatial distribution of small signal gain in a segmented hollow cathode discharge laser', Applied Physics B: Lasers and Optics, vol. 65, no. 4-5, pp. 613-618.
Adamowicz, T. M. ; Donkó, Z. ; Szalai, L. ; Rózsa, K. ; Kwaśniewski, W. / The spatial distribution of small signal gain in a segmented hollow cathode discharge laser. In: Applied Physics B: Lasers and Optics. 1997 ; Vol. 65, No. 4-5. pp. 613-618.
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