### The possibility of an efficient tunable molecular iodine laser near 340 nmThe possibility of an efficient tunable molecular iodine laser near 340 nm

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 Author McCusker, M. V. ♦ Hill, R. M. ♦ Huestis, D. L. ♦ Lorents, D. C. ♦ Gutcheck, R. A. ♦ Nakano, H. H. Sponsorship USDOE Source United States Department of Energy Office of Scientific and Technical Information Content type Text Language English
 Subject Keyword Engineering-Facilities & Equipment-Lasers ♦ Engineering-Lasers ♦ GAS LASERS- PLANNING ♦ ARGON ♦ EFFICIENCY ♦ ELECTRON BEAMS ♦ FLUORESCENCE ♦ GAIN ♦ IODINE ♦ ULTRAVIOLET RADIATION Abstract We have observed intense band emissions between 340 and 344 nm from electron-beam-excited mixtures of high-pressure argon gas and iodine vapor. This emission appears to be from molecular iodine. Using the 357.6-nm band from an Ar/ N$sub 2$ mixture as a calibration, we have measured the fluorescence yield in this wavelength region to be 70plus-or-minus24%. From this we computed an over- all fluorescence energy efficiency of 13plus-or-minus4%. Based on these observations, we suggest the feasibility of an efficient high-energy electron- beam-pumped argon-iodine laser. The gain of such an argon-iodine laser should be comparable to that of the Ar/N$sub 2$ second positive laser. Educational Use Research Learning Resource Type Article Publisher Date 1975-09-15 Publisher Place United States Journal Appl. Phys. Lett. Volume Number 27 Issue Number 6 Organization Stanford Research Institute, Menlo Park, California 94025