Fumio Koyama

542 papers and 7.1k indexed citations i.

About

Fumio Koyama is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Surfaces, Coatings and Films. According to data from OpenAlex, Fumio Koyama has authored 542 papers receiving a total of 7.1k indexed citations (citations by other indexed papers that have themselves been cited), including 525 papers in Electrical and Electronic Engineering, 317 papers in Atomic and Molecular Physics, and Optics and 39 papers in Surfaces, Coatings and Films. Recurrent topics in Fumio Koyama’s work include Semiconductor Lasers and Optical Devices (409 papers), Photonic and Optical Devices (395 papers) and Semiconductor Quantum Structures and Devices (238 papers). Fumio Koyama is often cited by papers focused on Semiconductor Lasers and Optical Devices (409 papers), Photonic and Optical Devices (395 papers) and Semiconductor Quantum Structures and Devices (238 papers). Fumio Koyama collaborates with scholars based in Japan, Saudi Arabia and United States. Fumio Koyama's co-authors include Kenichi Iga, Tomoyuki Miyamoto, Akihiro Matsutani, Shinya Kinoshita, Toshihiko Baba, Y. Suematsu, Hamed Dalir, T. Mukaihara, Nobuhiko Nishiyama and Takahiro Sakaguchi and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Nature Photonics.

In The Last Decade

Co-authorship network of co-authors of Fumio Koyama i

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Fields of papers citing papers by Fumio Koyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Countries citing papers authored by Fumio Koyama

Since Specialization

Citations

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

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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