Applied Physics B

, Volume 84, Issue 1–2, pp 333–337 | Cite as

Characteristic properties of ZnO random laser pumped by nanosecond pulses

  • V.M. Markushev
  • M.V. Ryzhkov
  • C.M. BriskinaEmail author


Investigations of UV radiation spectra of powdered zinc oxide and its unordered film were conducted. The samples were pumped by 3-rd harmonics of the two-stage Nd:YAG-laser (λ=355 nm) with pulse duration ∼10 ns. Maximum density of energy of pumping pulses was about 150 mJ/cm2. With some of our samples, we achieved lasing. The threshold values of the pumping energy density occurred higher than those under picosecond pumping approximately for one-two orders of magnitude. It was shown that the threshold of lasing and the character of lasing spectra depend on the morphology of particles forming a powder. The long-wavelength shift of the maximum of lasing spectra with a rise of the pumping was observed. It was interpreted as a result of participation of electron–hole plasma recombination in the process of lasing. A chaotic character of lasing spectra was observed and partially analyzed.


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Institute of Radio Engineering and Electronics of RAS125009Russia

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