title: Optical studies of Sm³⁺ ions doped zinc alumino bismuth borate glasses.
abstract: Zinc Alumino Bismuth Borate (ZnAlBiB) glasses doped with different concentrations of samarium (Sm(3+)) ions were prepared by using melt quenching technique and characterized for their lasing potentialities in visible region by using the techniques such as optical absorption, emission and emission decay measurements. Radiative properties for various fluorescent levels of Sm(3+) ions were estimated from absorption spectral information using Judd-Ofelt (JO) analysis. The emission spectra and con-focal photoluminescence images obtained by 410 nm laser excitation demonstrates very distinct and intense orange-red emission for all the doped glasses. The suitable concentration of Sm(3+) ions in these glasses to act as an efficient lasing material has been discussed by measuring the emission cross-section and branching ratios for the emission transitions. The quantum efficiencies were also been estimated from emission decay measurements recorded for the (4)G5/2 level of Sm(3+) ions. From the measured emission cross-sections, branching ratios, strong photoluminescence features and CIE chromaticity coordinates, it was found that 1 mol% of Sm(3+) ions doped ZnAlBiB glasses are most suitable for the development of visible orange-red lasers.
authors: Department of Physics, KL University, Green Fields, Guntur (Dt), Vaddeswaram 522 502, AP, India.
authors: K
authors: K
authors: Swapna
authors: Department of Physics, KL University, Green Fields, Guntur (Dt), Vaddeswaram 522 502, AP, India.
authors: Sk
authors: S
authors: Mahamuda
authors: Department of Physics, KL University, Green Fields, Guntur (Dt), Vaddeswaram 522 502, AP, India; Department of Applied Physics, Delhi Technological University, Bawana Road, New Delhi 110 042, India. Electronic address: drsrallam@gmail.com.
authors: A
authors: A
authors: Srinivasa Rao
authors: Nano Photonics Laboratory, Department of Physics, Indian Institute of Technology-Delhi, Hauz Khas, New Delhi 110 016, India.
authors: S
authors: S
authors: Shakya
authors: Department of Physics, SV University, Tirupathi 517 502, AP, India.
authors: T
authors: T
authors: Sasikala
authors: CSIR-National Physical Laboratory, Dr. K.S. Krishnan Road, Pusa, New Delhi 110 012, India.
authors: D
authors: D
authors: Haranath
authors: Nano Photonics Laboratory, Department of Physics, Indian Institute of Technology-Delhi, Hauz Khas, New Delhi 110 016, India.
authors: G
authors: G
authors: Vijaya Prakash
mesh_terms: D000042:Absorption; D000535:Aluminum / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry*; D001881:Borates / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D007477:Ions; D049449:Luminescence; D055620:Optical Phenomena; D012493:Samarium / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry*
chemical_list: D001881:Borates; D007477:Ions; D012493:Samarium; D000535:Aluminum; D015032:Zinc; D001729:Bismuth
keywords: Emission cross-section; Glasses; JO parameters; Radiative properties; Samarium