J
J. Suresh Kumar
Researcher at University of Aveiro
Publications - 58
Citations - 1659
J. Suresh Kumar is an academic researcher from University of Aveiro. The author has contributed to research in topics: Photoluminescence & Absorption spectroscopy. The author has an hindex of 22, co-authored 55 publications receiving 1411 citations. Previous affiliations of J. Suresh Kumar include Sri Venkateswara University.
Papers
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Fluorescence characteristics of Dy3+ ions in calcium fluoroborate glasses
TL;DR: In this paper, the free-ion Hamiltonian model and Judd-Ofelt theory have been used to analyze the energy level scheme and spectral intensities of Dy 3+ ions in CFB glasses.
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Spectroscopic and photoluminescence properties of Dy3+-doped lead tungsten tellurite glasses for laser materials
TL;DR: In this article, three phenomelogical intensity parameters Ω λ ( λ ǫ = 2, 4, 6) have been determined from the absorption spectral intensities using the Judd-Ofelt (J-O) theory.
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Photoluminescence properties of Sm3+ in LBTAF glasses
TL;DR: In this article, the authors have analyzed the room temperature visible and near infrared optical absorption and emission spectra of Sm 3+ -doped lead borate titanate aluminum fluoride (LBTAF) glasses with molar composition (50− x ) PbO−30H 3 BO 3 −10TiO 2 −10AlF 3 − x Sm 2 O 3.
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Absorption and fluorescence properties of Sm3+ ions in fluoride containing phosphate glasses
T. Suhasini,J. Suresh Kumar,T. Sasikala,Kiwan Jang,Ho Sueb Lee,M. Jayasimhadri,Jung Hyun Jeong,Soung Soo Yi,L. Rama Moorthy +8 more
TL;DR: In this article, the effect of free-ion energy level parameters along with calculated energies were determined using the freeion Hamiltonian (H FI ) model using the experimental oscillator strengths to evaluate three phenomenological J-O intensity parameters.
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Luminescent characteristics of Dy3+ doped strontium magnesium aluminate phosphor for white LEDs
TL;DR: In this article, Dy3+ doped strontium magnesium aluminate (SMA) phosphors were synthesized by solid state reaction method with different calcination temperatures, and the luminescent properties of SMA:Dy3+ phosphor were investigated from the excitation and emission spectra.