Search Results - "Ratnakaram, Y. C"

Bright green emission from f-MWCNT embedded co-doped Bi3+ + Tb3+:polyvinyl alcohol polymer nanocomposites for photonic applications by Kumar, K. Naveen, Padma, R, Ratnakaram, Y. C, Kang, Misook

“…A bright, dazzling green emission has been obtained from functionalized multi walled carbon nanotube (f-MWCNTs)-embedded Bi 3+ + Tb 3+ :PVA polymer…”
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Luminescence, structural and dielectric properties of Sm3+ impurities in strontium lithium bismuth borate glasses by Rajesh, D., Balakrishna, A., Ratnakaram, Y.C.

“…► Bismuth borate glasses (SLBiB) doped Sm3+ ion were synthesized by melt quenching method. ► Judd–Ofelt parameters Ωλ (λ=2, 4 and 6) for studied glasses are…”
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Structural and photoluminescence properties of Dy3+ doped different modifier oxide-based lithium borate glasses by Balakrishna, A., Rajesh, D., Ratnakaram, Y.C.

“…Structural and photoluminescence properties of Dy3+ doped lithium fluoro-borate glasses with the compositions Li2B4O7–BaF2–NaF–MO (where M=Mg, Ca, Cd and Pb),…”
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Er3+-doped strontium lithium bismuth borate glasses for broadband 1.5μm emission – Structural and optical properties by Rajesh, D., Ratnakaram, Y.C., Balakrishna, A.

“…Strontium lithium bismuth borate glasses (SLBiB) doped with various concentrations of Er3+ were prepared using conventional melt quenching technique and…”
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Optical characterization, infrared emission and visible up-conversion in Er3+ doped tellurite glasses by Seshadri, M., Chillcce, E.F., Marconi, J.D., Sigoli, F.A., Ratnakaram, Y.C., Barbosa, L.C.

“…In this work, Er3+ doped tellurite glasses have been prepared with the composition (82.5-x) TeO2+4.5Bi2O3+11.5ZnO+1.5Nb2O5+x Er2O3 (x=0.1, 0.3, 0.5, 0.7,…”
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Effect of modifier oxides on absorption and emission properties of Eu3+ doped different lithium fluoroborate glass matrices by Ratnakaram, Y.C., Balakrishna, A., Rajesh, D.

“…Eu3+ doped lithium fluoroborate glass with different modifier oxides (Li2B4O7–BaF2–NaF–MO where M=Mg, Ca, Cd and Pb) and combinations of modifier oxides…”
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Investigation of emission characteristics in Er3+- doped bismuth phosphate glasses for NIR laser materials by Kumar, M., Vijayalakshmi, R.P., Ratnakaram, Y.C.

“…[Display omitted] •Er3+ dopedbismuth flourophosphateglasses were successfully prepared by high temperature melting method.•The influence of modifier cations as…”
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Study on influence of modifiers on structural and spectroscopic properties of Nd3+ doped different lithium tetra borate glasses by Dinesh, P Sai, Kumar, M, Ratnakaram, Y C

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Structural and luminescence properties of Dy3+ ion in strontium lithium bismuth borate glasses by RAJESH, D, RATNAKARAM, Y. C, SESHADRI, M, BALAKRISHNA, A, SATYA KRISHNA, T

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Structural and spectroscopic studies of Er3+ in different fluorophosphate glasses for green laser and fibre amplifier operations by Surya Narayana Devara, B, Dinesh, P Sai, Kumar, M, Ratnakaram, Y C

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Compositional-dependent properties of Pr3+-doped multicomponent fluoro-phosphate glasses for visible applications: a photoluminescence study by Babu, S., Rajput, P., Ratnakaram, Y. C.

“…Five fluoro-phosphate (FP) glasses of different compositions, 49.5P 2 O 5 –10AlF 3 –10BaF 2 –10SrF 2 –10PbO–10M (M = Li 2 O, Na 2 O, K 2 O, ZnO, and Bi 2 O 3…”
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Investigations on luminescence performance of Sm3+ ions activated in multi-component fluoro-phosphate glasses by Babu, S., Balakrishna, A., Rajesh, D., Ratnakaram, Y.C.

“…[Display omitted] •Higher Ω4 values confirm the higher symmetry between samarium and ligand anion.•Using Judd–Ofelt theory, various radiative properties are…”
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Electronic spectra and optical band gap studies in neodymium chlorophosphate glasses by Ratnakaram, Y.C, Viswanadha Reddy, A

“…The present work aims to study the variation of optical band gaps, intensity parameters, and radiative lifetimes with different metal ions in various…”
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Er(3+)-doped strontium lithium bismuth borate glasses for broadband 1.5 mu m emission - Structural and optical properties by Rajesh, D, Ratnakaram, Y C, Balakrishna, A

“…Strontium lithium bismuth borate glasses (SLBiB) doped with various concentrations of Er(3+) were pre-pared using conventional melt quenching technique and…”
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Structural and optical properties of Nd3+ in lithium fluoro-borate glass with relevant modifier oxides by Balakrishna, A., Rajesh, D., Ratnakaram, Y.C.

“…•Judd–Ofelt theory is applied and analyzed the spectra of Nd3+ doped glasses.•The radiative properties of all present glasses were calculated.•Larger β and…”
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Impact of Bi2O3 on structural properties and lasing effects in Nd3+ doped bismuth phosphate glasses at 1.053μm emission by Damodaraiah, S., Reddy Prasad, V., Ratnakaram, Y.C.

“…Influence of addition of bismuth oxide (Bi2O3) on structural and optical properties of 0.5Nd3+doped different phosphate glasses prepared by melt quenching…”
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Pr3+-Doped Strontium–Aluminum–Bismuth–Borate Glasses for Laser Applications by Naidu, M. Dhamodhara, Ratnakaram, Y. C.

“…The chemical composition of Pr 3+ -doped strontium–aluminum–bismuth–borate glasses with different concentrations, that is, (50 – x)B 2 O 3 + 20Bi 2 O 3 + 7AlF…”
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Photoluminescence investigations of Eu3+-doped LiPbB5O9 as a red emitting phosphor for warm W-LED applications by Raghu Raman, T., Raju, B Devaprasad, Ratnakaram, Y. C.

“…LiPbB 5 O 9 :Eu 3+ phosphors were synthesized via solid-state reaction technique and studied various properties. For the prepared LiPbB 5 O 9 :Eu 3+ phosphors,…”
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Spectroscopic analysis of Ho3+ transitions in different modifier oxide based lithium–fluoro-borate glasses by Balakrishna, A., Rajesh, D., Ratnakaram, Y.C.

“…In recent investigations it was observed that the presence of different structural groups in borate glasses was favorable for spectroscopic investigations of…”
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Structural and luminescence properties of Sm3+‐doped bismuth phosphate glass for orange‐red photonic applications by Damodaraiah, S., Reddy Prasad, V., Ratnakaram, Y. C.

“…In the present study, the effect of bismuth oxide (Bi2O3) content on the structural and optical properties of 0.5Sm3+‐doped phosphate glass and the effect of…”
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