• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/042/03/0099

    • Keywords

       

      Phosphate glass; erbium doping; Judd–Ofelt parameters; spectroscopic quality factor; laser active medium.

    • Abstract

       

      Lead zinc phosphate (LZP) glass dopedwith 0.6% Er$^{3+}$ is prepared by a conventional melt quenching technique. Judd–Ofelt (JO) analysis is carried out with an absorption spectrum of the as-prepared glass generating the set of JOparameters: $\Omega_2 = 2.75 \times 10^{−20}$ cm$^{−2}$, $\Omega_4 = 2.71 \times 10^{−20}$ cm$^{−2}$ and $\Omega_6 = 0.44 \times 10^{−20}$ cm$^{−2}$. The magnitude of the spectroscopic quality factor ($\xi_p$) defined by $\Omega_4/\Omega_6$ obtained in our sample turns out to be 6.16 which is 2–10 times larger than that of other Er$^{3+}$ doped glasses. The lifetime of ${}^4$I$_{13/2}$ and ${}^4$I$_{11/2}$ levels estimated via the JO parameters is found to provide superior values of 7.25 and 5.51 ms, respectively. The elevated value of $\Omega_4/\Omega_6$ along with the estimated 100%luminescence branching ratio of ${}^4$I$_{13/2}\to {}^4$I$_{15/2}$ transition implies that Er$^{3+}$ doped LZP can be a promising material as a laser active medium.

    • Author Affiliations

       

      PABITRA MANDAL1 SWARUP CHOWDHURY2 SUBHANKAR GHOSH2

      1. Department of Physics, Narasinha Dutt College, Howrah 711101, India
      2. Department of Physics, St. Xavier’s College (Autonomous), Mother Teresa Sarani, Kolkata 700016, India
    • Dates

       
  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.