O. Toma

411 total citations
45 papers, 347 citations indexed

About

O. Toma is a scholar working on Materials Chemistry, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, O. Toma has authored 45 papers receiving a total of 347 indexed citations (citations by other indexed papers that have themselves been cited), including 39 papers in Materials Chemistry, 23 papers in Electrical and Electronic Engineering and 19 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in O. Toma's work include Luminescence Properties of Advanced Materials (39 papers), Solid State Laser Technologies (19 papers) and Glass properties and applications (14 papers). O. Toma is often cited by papers focused on Luminescence Properties of Advanced Materials (39 papers), Solid State Laser Technologies (19 papers) and Glass properties and applications (14 papers). O. Toma collaborates with scholars based in Romania, Algeria and Italy. O. Toma's co-authors include S. Georgescu, R. Bı̂rjega, Cristian Matei, Alexandru Achim, L. Gheorghe, Alina Ştefan, S Georgescu, C. Naud, И. А. Иванов and Livia Petrescu and has published in prestigious journals such as Anesthesiology, Journal of Alloys and Compounds and IEEE Journal of Quantum Electronics.

In The Last Decade

O. Toma

42 papers receiving 337 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
O. Toma Romania 12 304 199 125 88 60 45 347
Naruhito Sawanobori Japan 11 276 0.9× 221 1.1× 208 1.7× 85 1.0× 31 0.5× 27 379
Jarosław Komar Poland 13 314 1.0× 211 1.1× 106 0.8× 106 1.2× 48 0.8× 35 358
Fengqin Lai China 12 341 1.1× 227 1.1× 56 0.4× 45 0.5× 77 1.3× 30 356
Jurǵis Grūbe Latvia 11 288 0.9× 159 0.8× 126 1.0× 70 0.8× 28 0.5× 44 356
Y.J. Chen China 13 359 1.2× 296 1.5× 221 1.8× 100 1.1× 37 0.6× 35 434
J.Y. Yu China 7 432 1.4× 208 1.0× 361 2.9× 59 0.7× 25 0.4× 8 462
Juqing Di China 14 301 1.0× 323 1.6× 165 1.3× 142 1.6× 38 0.6× 25 396
Yanna Tian China 12 299 1.0× 224 1.1× 103 0.8× 45 0.5× 51 0.8× 25 339
XiaoMan Li China 8 452 1.5× 308 1.5× 235 1.9× 75 0.9× 90 1.5× 9 471
J.H. Kang South Korea 7 231 0.8× 147 0.7× 32 0.3× 51 0.6× 49 0.8× 15 281

Countries citing papers authored by O. Toma

Since Specialization
Citations

This map shows the geographic impact of O. Toma's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by O. Toma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O. Toma more than expected).

Fields of papers citing papers by O. Toma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by O. Toma. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by O. Toma. The network helps show where O. Toma may publish in the future.

Co-authorship network of co-authors of O. Toma

This figure shows the co-authorship network connecting the top 25 collaborators of O. Toma. A scholar is included among the top collaborators of O. Toma based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with O. Toma. O. Toma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Toma, O., et al.. (2025). Er:(La,Zr):Y 2 O 3 transparent ceramic: Excited-state absorption, line broadening and Judd–Ofelt analysis. Journal of Alloys and Compounds. 1036. 181628–181628.
2.
Diaf, M., et al.. (2024). Luminescence properties of CdF2 single crystals co‐doped with Er3+ and Y3+ ions. Luminescence. 39(4). e4719–e4719. 3 indexed citations
3.
Georgescu, S., et al.. (2014). Judd–Ofelt analysis of Tm3+ in La3Ga5.5Ta0.5O14 ceramic with granular structure. Journal of Luminescence. 157. 35–38. 7 indexed citations
4.
Toma, O. & S. Georgescu. (2013). Judd–Ofelt analysis of Er3+ ions in calcium lithium niobium gallium garnet. Journal of Luminescence. 147. 259–264. 9 indexed citations
5.
Georgescu, S., et al.. (2013). Upconversion luminescence in La3Ga5.5Ta0.5O14codoped with Er3+and Yb3+. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8882. 888204–888204. 1 indexed citations
6.
Georgescu, S., et al.. (2013). Violet and near-ultraviolet upconversion luminescence in La3Ga5.5Ta0.5O14 codoped with Er3+ and Yb3+. Physica B Condensed Matter. 413. 55–58. 10 indexed citations
7.
Georgescu, S, et al.. (2009). Eu-doped langasite, langatate and langanite – possible new red phosphors. Optoelectronics and Advanced Materials Rapid Communications. 3. 1379–1382. 1 indexed citations
8.
Georgescu, S., O. Toma, L. Gheorghe, et al.. (2009). Optical and morphologic properties of YVO 4 :Eu phosphor. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 7469. 74690C–74690C.
9.
Constantinescu, S., et al.. (2007). MÖSSBAUER AND OPTICAL INVESTIGATION OF Eu:YAG NANOCRYSTALS SYNTHESIZED BY A SOL-GEL METHOD. 1 indexed citations
10.
Georgescu, S., et al.. (2007). Disorder effects in the fluorescence spectra of Eu3+ in langatate (La3Ga5.5Ta0.5O14) crystals. Optical Materials. 30(2). 212–215. 3 indexed citations
11.
Toma, O.. (2007). Emission Regimes of a Green Er:${\hbox {YLiF}}_{4}$ Laser. IEEE Journal of Quantum Electronics. 43(7). 519–526. 5 indexed citations
12.
13.
Toma, O., Eugen Osiac, & S. Georgescu. (2006). Pump wavelengths for an Er:YLiF4 green-emitting laser. Optical Materials. 30(1). 181–183. 2 indexed citations
14.
Toma, O. & S. Georgescu. (2006). The Influence of Pump Wavelength on Er:YAG Green-Emitting Laser Characteristics. IEEE Journal of Quantum Electronics. 42(2). 192–197. 4 indexed citations
15.
Weber, Nina C., et al.. (2005). Effects of Nitrous Oxide on the Rat Heart In Vivo. Anesthesiology. 103(6). 1174–1182. 1 indexed citations
16.
Georgescu, S. & O. Toma. (2005). Er:YAG three-micron laser: performances and limits. IEEE Journal of Selected Topics in Quantum Electronics. 11(3). 682–689. 21 indexed citations
17.
Georgescu, S., O. Toma, & И. А. Иванов. (2005). Upconversion from the 4I13/2 and 4I11/2 levels in Er:YAG. Journal of Luminescence. 114(1). 43–52. 12 indexed citations
18.
Georgescu, S. & O. Toma. (2005). Energy transfer processes in Er‐doped crystals. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 2(1). 280–283. 3 indexed citations
19.
Toma, O. & S. Georgescu. (2004). Dynamics of an upconversion Er:YAG laser with reabsorption losses. Journal of the Optical Society of America B. 21(9). 1630–1630. 3 indexed citations
20.
Georgescu, S., et al.. (2002). ESA processes responsible for infrared pumped, green and violet luminescence in low-concentrated Er: YAG. Journal of Luminescence. 101(1-2). 87–99. 19 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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