J. Umeda

1.6k total citations
33 papers, 1.2k citations indexed

About

J. Umeda is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Spectroscopy. According to data from OpenAlex, J. Umeda has authored 33 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Electrical and Electronic Engineering, 25 papers in Atomic and Molecular Physics, and Optics and 5 papers in Spectroscopy. Recurrent topics in J. Umeda's work include Semiconductor Lasers and Optical Devices (25 papers), Semiconductor Quantum Structures and Devices (23 papers) and Photonic and Optical Devices (13 papers). J. Umeda is often cited by papers focused on Semiconductor Lasers and Optical Devices (25 papers), Semiconductor Quantum Structures and Devices (23 papers) and Photonic and Optical Devices (13 papers). J. Umeda collaborates with scholars based in Japan and United States. J. Umeda's co-authors include M. Nakamura, K. Aiki, T. Kuroda, N. Chinone, R. Ito, Hazime Kusumoto, A. Yariv, Minoru Maëda, H. W. Yen and T. Kajimura and has published in prestigious journals such as The Journal of Chemical Physics, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

J. Umeda

30 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. Umeda Japan 20 1.0k 753 162 127 73 33 1.2k
P. J. Scanlon Canada 14 687 0.7× 184 0.2× 32 0.2× 416 3.3× 40 0.5× 39 1.0k
R. Ley Germany 11 379 0.4× 251 0.3× 60 0.4× 385 3.0× 131 1.8× 39 730
Wolfgang Bludau Germany 11 636 0.6× 439 0.6× 28 0.2× 364 2.9× 26 0.4× 21 877
Naokatsu Sano Japan 21 550 0.5× 876 1.2× 83 0.5× 323 2.5× 17 0.2× 86 1.2k
J. Vidal United States 5 304 0.3× 603 0.8× 50 0.3× 353 2.8× 57 0.8× 7 956
Zhensheng Tao United States 14 239 0.2× 621 0.8× 100 0.6× 193 1.5× 157 2.2× 20 895
H. T. Weaver United States 15 418 0.4× 333 0.4× 125 0.8× 246 1.9× 12 0.2× 78 1.0k
G. G. Macfarlane India 9 774 0.8× 788 1.0× 21 0.1× 476 3.7× 11 0.2× 9 1.3k
M. Sagurton United States 17 189 0.2× 437 0.6× 22 0.1× 185 1.5× 37 0.5× 30 740
Alain Le Corre France 25 1.6k 1.6× 1.6k 2.2× 38 0.2× 562 4.4× 25 0.3× 134 2.0k

Countries citing papers authored by J. Umeda

Since Specialization
Citations

This map shows the geographic impact of J. Umeda'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 J. Umeda with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. Umeda more than expected).

Fields of papers citing papers by J. Umeda

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. Umeda. 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 J. Umeda. The network helps show where J. Umeda may publish in the future.

Co-authorship network of co-authors of J. Umeda

This figure shows the co-authorship network connecting the top 25 collaborators of J. Umeda. A scholar is included among the top collaborators of J. Umeda 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 J. Umeda. J. Umeda 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.
Fukuzawa, T., M. Nakamura, M. Hirao, T. Kuroda, & J. Umeda. (1980). Monolithic Integration of a GaAlAs Injection Laser with a Schottky-gate FET. WC3–WC3. 3 indexed citations
2.
Kajimura, T., et al.. (1980). MP-B5 GaAlAs visible laser arrays. IEEE Transactions on Electron Devices. 27(11). 2181–2181. 5 indexed citations
3.
Fukuzawa, T., M. Nakamura, M. Hirao, T. Kuroda, & J. Umeda. (1980). Monolithic integration of a GaAlAs injection laser with a Schottky-gate field effect transistor. Applied Physics Letters. 36(3). 181–183. 30 indexed citations
4.
Nakamura, M., T. Kuroda, J. Umeda, K. Aiki, & R. Ito. (1978). Single Transverse and Longitudinal Mode Operation of Semiconductor Lasers. TuD1–TuD1.
5.
Nakamura, M., K. Aiki, N. Chinone, R. Ito, & J. Umeda. (1978). Longitudinal-mode behaviors of mode-stabilized AlxGa1−xAs injection lasers. Journal of Applied Physics. 49(9). 4644–4648. 141 indexed citations
6.
Kuroda, T., M. Nakamura, K. Aiki, & J. Umeda. (1978). Channeled-substrate-planar structure AlxGa_1−x As lasers: an analytical waveguide study. Applied Optics. 17(20). 3264–3264. 21 indexed citations
7.
Kuroda, T., S. Yamashita, M. Nakamura, & J. Umeda. (1978). Channeled-substrate-planar structure distributed-feedback semiconductor lasers. Applied Physics Letters. 33(2). 173–174. 13 indexed citations
8.
Nakamura, M., K. Aiki, & J. Umeda. (1978). Direct observation of the saturation behavior of spontaneous emission in semiconductor lasers. Applied Physics Letters. 32(5). 322–323. 25 indexed citations
9.
Aiki, K., M. Nakamura, T. Kuroda, et al.. (1978). Transverse mode stabilized Al<inf>x</inf>Ga<inf>1-x</inf>As injection lasers with channeled-substrate-planar structure. IEEE Journal of Quantum Electronics. 14(2). 89–94. 186 indexed citations
10.
Aiki, K., M. Nakamura, & J. Umeda. (1977). A frequency-multiplexing light source with monolithically integrated distributed-feedback diode lasers. IEEE Journal of Quantum Electronics. 13(4). 220–223. 28 indexed citations
11.
Kajimura, T., K. Aiki, & J. Umeda. (1977). Nonradiative dark regions along surface ripples in GaP LPE layers. Applied Physics Letters. 30(10). 526–528. 20 indexed citations
12.
Aiki, K., M. Nakamura, T. Kuroda, & J. Umeda. (1977). Channeled-substrate planar structure (AlGa)As injection lasers. Applied Physics Letters. 30(12). 649–651. 110 indexed citations
13.
Umeda, J., et al.. (1976). Room Temperature Operation of Distributed Feedback Diode Lasers with Separate Carrier and Optical Confinement. Japanese Journal of Applied Physics. 15(S1). 317–317. 2 indexed citations
14.
Aiki, K., M. Nakamura, & J. Umeda. (1976). Lasing characteristics of distributed-feedback GaAs-GaAlAs diode lasers with separate optical and carrier confinement. IEEE Journal of Quantum Electronics. 12(10). 597–603. 30 indexed citations
15.
Nakamura, M., K. Aiki, J. Umeda, & A. Yariv. (1975). cw operation of distributed-feedback GaAs-GaAlAs diode lasers at temperatures up to 300 K. Applied Physics Letters. 27(7). 403–405. 71 indexed citations
16.
Nakamura, M., K. Aiki, J. Umeda, et al.. (1975). GaAs GaAlAs double-heterostructure injection lasers with distributed feedback. IEEE Journal of Quantum Electronics. 11(7). 436–439. 27 indexed citations
17.
Aiki, K., M. Nakamura, J. Umeda, et al.. (1975). GaAs-GaAlAs distributed-feedback diode lasers with separate optical and carrier confinement. Applied Physics Letters. 27(3). 145–146. 56 indexed citations
18.
Nakamura, M., K. Aiki, J. Umeda, et al.. (1974). Liquid phase epitaxy of GaAlAs on GaAs substrates with fine surface corrugations. Applied Physics Letters. 24(10). 466–468. 19 indexed citations
19.
Nakamura, Shigeru, J. Umeda, & Osamu Nakada. (1972). Response times of light-emitting diodes. IEEE Transactions on Electron Devices. 19(8). 995–997. 18 indexed citations
20.
Umeda, J., et al.. (1962). Tin-Tellurium Phase Diagram in the Vicinity of Stannous Telluride SnTe. Japanese Journal of Applied Physics. 1(5). 277–277. 13 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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