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      https://www.ias.ac.in/article/fulltext/pram/075/05/0985-0989

    • Keywords

       

      Laser dye; pyrromethene 567; rhodamine 6G; electronic structure calculation.

    • Abstract

       

      Narrow-band laser performance of alcohol solutions of pyrromethene 567 (PM567) and rhodamine 6G (RH6G) dye was investigated using a home-made GIG- configured dye laser, excited by the second-harmonic radiation (at 532 nm) of a pulsed Nd:YAG laser. Higher laser efficiency was observed with PM567 dye ($\sim 23%$ peak) in comparison to the commonly used RH6G dye (16.5%), in spite of much lower fluorescence quantum efficiency of the PM567 (0.83) vis-à-vis RH6G (0.98) dye solutions in ethanol. First principle-based electronic structure calculations were performed on PM567 dye in the ground ($S_{0}$) and excited states ($S_{1}$) using density functional theory to elucidate the structure and photophysical properties of the dye.

    • Author Affiliations

       

      K K Jagtap1 D K Maity2 A K Ray1 K Dasgupta1 S K Ghosh1

      1. Laser & Plasma Technology Division; Bhabha Atomic Research Centre, Mumbai 400 085, India
      2. Theoretical Chemistry Section, Bhabha Atomic Research Centre, Mumbai 400 085, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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