Recent advances in solid fueled pulsed short-wavelength chemical laser research

I. Bar, D. Heflinger, Y. Kaufman, G. Miron, M. Sapir, Y. Tzuk, S. Rosenwaks

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Recent advances in the research aimed at achieving short-wavelength chemical laser via detonation of primary explosives are presented. Lead azide, Pb(N3)2, is initiated by a laser pulse and the ensuing chemiluminescence and laser induced fluorescence are monitored. As a result of the detonation, electronically excited N2 is formed and a number of Pb states are preferentially populated by energy transfer from the N2. Most of the chemiluminescence originates in Pb and appears in the time interval 5 -50 μs following the initiation, depending on the geometry of the detonation vessel. The temporal behavior is explained by a ”moving cloud” hydrodynamic model and by a coupled hydrodynamic-kinetic model. Calculations based on the coupled model point out that population inversion between potential laser levels of Pb is feasible. Both experiments and calculations indicate that high concentrations of excited, effectively long-lived Pb states are maintained as a result of radiation-trapping and that these states can be exploited to obtain laser transitions.

Original languageEnglish
Pages (from-to)340-352
Number of pages13
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 20 Jun 1989

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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