Ryoichi Ito

3.7k total citations · 1 hit paper
135 papers, 2.9k citations indexed

About

Ryoichi Ito is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, Ryoichi Ito has authored 135 papers receiving a total of 2.9k indexed citations (citations by other indexed papers that have themselves been cited), including 95 papers in Atomic and Molecular Physics, and Optics, 93 papers in Electrical and Electronic Engineering and 35 papers in Materials Chemistry. Recurrent topics in Ryoichi Ito's work include Semiconductor Quantum Structures and Devices (67 papers), Semiconductor Lasers and Optical Devices (40 papers) and Photonic and Optical Devices (30 papers). Ryoichi Ito is often cited by papers focused on Semiconductor Quantum Structures and Devices (67 papers), Semiconductor Lasers and Optical Devices (40 papers) and Photonic and Optical Devices (30 papers). Ryoichi Ito collaborates with scholars based in Japan, United Kingdom and China. Ryoichi Ito's co-authors include Takashi Kondo, Nagaatsu Ogasawara, Ichiro Shoji, Masayuki Shirane, Y. Shiraki, Hiroyuki Yaguchi, Kentaro Onabe, Hisao Nakashima, Takashi Azuma and T. Yuasa and has published in prestigious journals such as Physical review. B, Condensed matter, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Ryoichi Ito

135 papers receiving 2.8k citations

Hit Papers

Absolute scale of second-order nonlinear-optical coeffici... 1997 2026 2006 2016 1997 200 400 600
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Absolute scale of second-order nonlinear-optical coefficients
    1997 606 citations Takashi Kondo, Ryoichi Ito et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryoichi Ito Japan 27 2.2k 1.9k 855 459 250 135 2.9k
Jeffrey O. White United States 29 1.9k 0.9× 2.1k 1.1× 634 0.7× 315 0.7× 291 1.2× 105 3.1k
B. Fluegel United States 24 1.5k 0.7× 1.6k 0.9× 1.2k 1.4× 317 0.7× 376 1.5× 104 2.6k
P. Lautenschlager Germany 17 1.7k 0.8× 1.6k 0.8× 1.4k 1.6× 199 0.4× 280 1.1× 23 2.7k
K. W. Wecht United States 22 2.1k 1.0× 2.0k 1.1× 543 0.6× 107 0.2× 123 0.5× 66 2.8k
R. F. Leheny United States 26 1.7k 0.8× 1.9k 1.0× 726 0.8× 146 0.3× 396 1.6× 82 2.7k
Kunishige Oe Japan 32 2.8k 1.3× 2.5k 1.3× 722 0.8× 148 0.3× 501 2.0× 165 3.5k
K. L. Shaklee United States 19 1.4k 0.7× 1.8k 0.9× 926 1.1× 164 0.4× 352 1.4× 31 2.4k
G. Lüpke United States 28 949 0.4× 1.4k 0.7× 841 1.0× 672 1.5× 350 1.4× 107 2.3k
A. Frova Italy 27 1.3k 0.6× 1.6k 0.9× 1.1k 1.3× 159 0.3× 220 0.9× 120 2.4k
A. Krier United Kingdom 28 2.7k 1.2× 2.1k 1.1× 990 1.2× 166 0.4× 321 1.3× 228 3.3k

Countries citing papers authored by Ryoichi Ito

Since Specialization
Citations

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

Fields of papers citing papers by Ryoichi Ito

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoichi Ito

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoichi Ito. A scholar is included among the top collaborators of Ryoichi Ito 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 Ryoichi Ito. Ryoichi Ito 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.
Daisaki, Hiromitsu, et al.. (2022). Three-dimensional Quantitative Evaluation Method in <sup>123</sup>I-MIBG Myocardial SPECT-CT. Japanese Journal of Radiological Technology. 79(1). 25–37. 1 indexed citations
2.
Maruyama, Kazuaki, Kazushi Yasuda, Ryoichi Ito, & Kyoko Imanaka‐Yoshida. (2022). Histopathological findings of pericarditis in a patient with multisystem inflammatory syndrome in children associated with COVID‐19: A case report. Pathology International. 73(2). 91–96. 1 indexed citations
3.
Ito, Ryoichi, Shinji Sato, Haijiang Liu, & Yoshimitsu TAJIMA. (2012). Large Scale Coastal Behavior of the 2011 Tohoku Tsunami. Journal of Japan Society of Civil Engineers Ser B2 (Coastal Engineering). 68(2). I_136–I_140. 1 indexed citations
4.
Pan, Wugen, Hiroyuki Yaguchi, Mitsuteru Ishikawa, et al.. (1997). A highly luminescent crescent-shaped tensile-strained quantum wire laser structure. Journal of Crystal Growth. 170(1-4). 585–589. 6 indexed citations
5.
Yaguchi, Hiroyuki, et al.. (1997). Photoluminescence excitation spectroscopy of GaP1−N alloys: conduction-band-edge formation by nitrogen incorporation. Journal of Crystal Growth. 170(1-4). 353–356. 46 indexed citations
6.
Pan, Wugen, Hiroyuki Yaguchi, Kentaro Onabe, et al.. (1996). Rectangular AlGaAs/AlAs Quantum Wires Using Spontaneous Vertical Quantum Wells. Japanese Journal of Applied Physics. 35(2S). 1214–1214. 4 indexed citations
7.
Pan, Wugen, Hiroyuki Yaguchi, Kentaro Onabe, et al.. (1994). Metalorganic vapor phase epitaxial growth and luminescence properties of GaAs/GaAsP quantum wires. Journal of Crystal Growth. 145(1-4). 702–706. 4 indexed citations
8.
Kataoka, Takeshi, Takashi Kondo, Ryoichi Ito, et al.. (1993). Magneto-optical study on excitonic spectra in (C6H13NH3)2PbI4. Physical review. B, Condensed matter. 47(4). 2010–2018. 110 indexed citations
9.
Muraki, Koji, S. Fukatsu, Satoru S. Kano, Yasuhiro Shiraki, & Ryoichi Ito. (1993). Fast Lateral Transport of Excitons in a GaAs/AlGaAs Quantum Well. Japanese Journal of Applied Physics. 32(12R). 5586–5586. 9 indexed citations
10.
Kondo, Takashi, et al.. (1992). Frequency doubling of a Nd:YAG laser using a crystal-cored fiber of an organic 4-(N,N-dimethylamino)-3-acetamidonitrobenzene. Applied Optics. 31(36). 7581–7581. 7 indexed citations
11.
Kondo, Takashi, et al.. (1990). Frequency doubling of laser diode light in organic channel waveguides. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 1337. 53–53. 1 indexed citations
12.
Onda, Tomohiro & Ryoichi Ito. (1989). Theory of Long-Range Order in III-V Semiconductor Ternary Alloys. I. Thermodynamic Model. Japanese Journal of Applied Physics. 28(9R). 1544–1544. 4 indexed citations
13.
Ogasawara, Nagaatsu & Ryoichi Ito. (1988). Longitudinal Mode Competition and Asymmetric Gain Saturation in Semiconductor Injection Lasers. II. Theory. Japanese Journal of Applied Physics. 27(4R). 615–615. 87 indexed citations
14.
Ogasawara, Nagaatsu & Ryoichi Ito. (1988). Longitudinal Mode Competition and Asymmetric Gain Saturation in Semiconductor Injection Lasers. I. Experiment. Japanese Journal of Applied Physics. 27(4R). 607–607. 34 indexed citations
15.
Ogasawara, Nagaatsu, et al.. (1987). Injection-Current-Controlled Bistable Optical Switching in Semiconductor Laser Amplifiers. Japanese Journal of Applied Physics. 26(6A). L917–L917. 7 indexed citations
16.
Onda, Tomohiro, Ryoichi Ito, & Nagaatsu Ogasawara. (1986). Thermodynamic Theory of III-V Semiconductor Ternary Solid Solutions. Japanese Journal of Applied Physics. 25(1R). 82–82. 6 indexed citations
17.
Ogasawara, Nagaatsu, et al.. (1984). Dispersion of the Linewidth Enhancement Factor in Semiconductor Injection Lasers. Japanese Journal of Applied Physics. 23(7A). L518–L518. 20 indexed citations
18.
Maëda, Minoru, et al.. (1978). Sinusoidal Modulation Characteristics of Buried-Heterostructure Lasers. IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences. 61(6). 441–445. 7 indexed citations
19.
Ito, Ryoichi. (1972). Quantum-Limit Piezoresistance of n-Type Inversion Layers of Silicon and Germanium. Journal of Applied Physics. 43(2). 735–737. 6 indexed citations
20.
Ito, Ryoichi, Tadashi Nozaki, Asao Nakamura, Naotake Morikawa, & Osamu Simamura. (1961). Radioassay of Labelled Organic Compounds Using Gaseous Samples. II. Carbon-14 Assay by means of Carbon Dioxide Counting in the Geiger and the Proportional Region. RADIOISOTOPES. 10(3). 297–301. 1 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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