Pulsed 469.4 nm hollow cathode He-Kr laser

M. Jánossy, K. Rózsa, P. Apai, P. Mezei, P. Horváth, L. Csillag, N. Kroó

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Design principles, construction and operation characteristics of a pulsed 469.4 nm He-Kr laser are described. The laser was operated in a 20 cm active length transverse hollow cathode discharge and was excited by 50 Hz repetition rate 0.1-1 ms duration square wave current pulses. Cataphoresis of Kr ions was found to play an important role in forming the laser pulse shape. By increasing the voltage a considerable increase of peak laser power occurred, the maximum power obtained was 80 mW. The sealed-off laser was operated using 400 μs, 4 A current pulses, pulsed laser power being 20 mW, average power 0.4 mW, respectively. The lifetime of the laser was 440 h, tube failure being due to gas cleanup caused by cathode sputtering.

Original languageEnglish
Pages (from-to)343-347
Number of pages5
JournalApplied Physics B Photophysics and Laser Chemistry
Issue number4
Publication statusPublished - Oct 1 1989


  • 42.55F
  • 42.60B

ASJC Scopus subject areas

  • Engineering(all)

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    Jánossy, M., Rózsa, K., Apai, P., Mezei, P., Horváth, P., Csillag, L., & Kroó, N. (1989). Pulsed 469.4 nm hollow cathode He-Kr laser. Applied Physics B Photophysics and Laser Chemistry, 49(4), 343-347. https://doi.org/10.1007/BF00324184