Dopant and concentration dependence of linear and nonlinear refractive index and dispersion for new (Mg, Ba)F2-based fluorophosphates glass

Ju H. Choi; Frank G. Shi; Alfred A. Margaryan; Ashot Margaryan; T. G. Nieh

doi:10.1117/12.479168

16 June 2003 Dopant and concentration dependence of linear and nonlinear refractive index and dispersion for new (Mg, Ba)F₂ based fluorophosphates glass

Ju H. Choi, Frank G. Shi, Alfred A. Margaryan, Ashot Margaryan, T. G. Nieh

Author Affiliations +

Proceedings Volume 4970, Laser Crystals, Glasses, and Nonlinear Materials Growth and Characterization; (2003) https://doi.org/10.1117/12.479168
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

Abstract

Linear and nonlinear refractive index, Abbe number, electronic energy gap and oscillator strength are reported for a new series of (Mg, Ba)F₂-based fluorophosphates glasses (MBBA system) doped with rare earth dopants (Er³⁺, Nd³⁺) in the concentration range of 6.67×10²⁰ - 2.86×10²¹ (ions/cm³) and 2.5×10²⁰ - 1.25×10²¹ (ions/cm³), respectively. The linear refractive index is found to increase with increasing dopant concentration, while the Abbe number is found to be remarkably concentration invariant, i.e., around 66-68 for both dopants. The average electronic band gap is also found to be almost dopant concentration independent, i.e., about 4.1, while the electronic oscillator strength is found to slightly increase with increasing dopant concentration, i.e., from 6.2 to 6.4. The nonlinear refractive index is found to show a linear increase from 1.2866 to 1.4018 for the investigated dopant concentration range. Those results strongly suggest the present new series of glasses can be excellent laser hosts.

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Ju H. Choi, Frank G. Shi, Alfred A. Margaryan, Ashot Margaryan, and T. G. Nieh "Dopant and concentration dependence of linear and nonlinear refractive index and dispersion for new (Mg, Ba)F₂ based fluorophosphates glass", Proc. SPIE 4970, Laser Crystals, Glasses, and Nonlinear Materials Growth and Characterization, (16 June 2003); https://doi.org/10.1117/12.479168

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