Enhanced resonant nonlinear absorption and optical limiting in Er3+ ions doped multicomponent tellurite glasses. (August 2018)

• Record Type: Journal Article
• Authors: Sajna, M.S.; Perumbilavil, Sreekanth; Prakashan, V.P.; Sanu, M.S.; Joseph, Cyriac; Biju, P.R.; Unnikrishnan, N.V.
• Is Part Of: Materials research bulletin. Volume 104(2018)
• Page Start: 227
• Page End: 235
• Publication Date: 2018-08
• Subjects: Tellurite glasses -- Optical nonlinearity -- Multiphoton absorption -- Optical limiting -- Z-scan technique; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2018.04.026
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: Nonlinear optical properties of TPBKZFEr glasses investigated by Z-scan technique. Optical limiting property of the TPBKZFEr glasses is studied for the first time. Nonlinearity of the prepared glasses found to be enhanced with Er 3+ concentration. The mechanism behind the nonlinear properties is successfully explained. It is evident that these glasses can be developed as tunable optical limiters. Abstract: Nonlinear optical properties of multicomponent tellurite glasses doped with Er 3+ ions were investigated by open aperture Z-scan measurements. Compositional and linear optical properties of the glasses were examined by the energy dispersive X-ray spectrum and UV–vis–NIR absorption spectrum analysis respectively. The mechanism behind the optical nonlinearity and optical limiting efficiency was successfully explained by evaluating the physical properties such as density, refractive index and polarizability of the glasses. The nonlinear properties critically depend on the polarizability, which is found to increase with the addition of Er 3+ ions by the creation of non-bridging oxygen ions. By the systematic addition of Er 3+ ions, we have dictated the physical properties and thus tuned the optical limiting efficiency of the glasses. This makes the Er 3+ -doped multicomponent tellurite glasses flexible tunable optical limiters for potential device applications.