Abstract
We fabricated pyrromethene 597(PM597) solid-state dyes which were dissolved in PMMA(poly- methylmethacrylate) and characterized the lasing characteristics. The laser was end-pumped by a frequency doubled Q-switched Nd : YAG laser. We obtained the slope efficiency of at lasing wavelength of 585 nm. We demonstrated the laser lifetime to be more than 100,000 shots with output energy of 250 mJ and repetition rate of 4 Hz by adding singlet oxygen quencher DABCO(1,4-diazabicyclo [2,2,2]octane) to the solid-state dye.
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