Koji Otsubo

479 total citations
13 papers, 343 citations indexed

About

Koji Otsubo is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, Koji Otsubo has authored 13 papers receiving a total of 343 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Atomic and Molecular Physics, and Optics, 11 papers in Electrical and Electronic Engineering and 3 papers in Materials Chemistry. Recurrent topics in Koji Otsubo's work include Semiconductor Quantum Structures and Devices (11 papers), Semiconductor Lasers and Optical Devices (8 papers) and Photonic and Optical Devices (7 papers). Koji Otsubo is often cited by papers focused on Semiconductor Quantum Structures and Devices (11 papers), Semiconductor Lasers and Optical Devices (8 papers) and Photonic and Optical Devices (7 papers). Koji Otsubo collaborates with scholars based in Japan. Koji Otsubo's co-authors include Mitsuru Sugawara, Yoshiaki Nakata, Yasuhiko Arakawa, Nobuaki Hatori, T. Akiyama, H. Ebe, Mitsuru Ishida, Hiroshi Ishikawa, Kazuo Nakajima and Y. Nishijima and has published in prestigious journals such as Applied Physics Letters, Japanese Journal of Applied Physics and Journal of Crystal Growth.

In The Last Decade

Koji Otsubo

13 papers receiving 333 citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Koji Otsubo 321 307 92 25 14 13 343
A.V. Kozhukhov 364 1.1× 360 1.2× 53 0.6× 33 1.3× 10 0.7× 11 380
G. Mak 304 0.9× 205 0.7× 55 0.6× 10 0.4× 24 1.7× 17 337
Ch. Ribbat 332 1.0× 345 1.1× 99 1.1× 16 0.6× 19 1.4× 8 370
M. Sparenberg 270 0.8× 226 0.7× 49 0.5× 9 0.4× 12 0.9× 11 308
K. Wolter 311 1.0× 303 1.0× 74 0.8× 14 0.6× 30 2.1× 36 362
A. Kamei 311 1.0× 297 1.0× 31 0.3× 36 1.4× 11 0.8× 9 318
P. Besomi 297 0.9× 242 0.8× 113 1.2× 14 0.6× 15 1.1× 32 341
M. Yamada 393 1.2× 318 1.0× 42 0.5× 35 1.4× 20 1.4× 30 405
X.H. Su 260 0.8× 233 0.8× 107 1.2× 54 2.2× 35 2.5× 13 285
Gyoungwon Park 384 1.2× 389 1.3× 108 1.2× 24 1.0× 23 1.6× 6 414

Countries citing papers authored by Koji Otsubo

Since Specialization
Citations

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

Fields of papers citing papers by Koji Otsubo

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koji Otsubo

This figure shows the co-authorship network connecting the top 25 collaborators of Koji Otsubo. A scholar is included among the top collaborators of Koji Otsubo 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 Koji Otsubo. Koji Otsubo is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

13 of 13 papers shown
1.
Otsubo, Koji, et al.. (2015). Cardiac ganglioneuroma in a juvenile pig. Journal of Veterinary Medical Science. 78(1). 117–119. 1 indexed citations
2.
Ishida, Mitsuru, Nobuaki Hatori, T. Akiyama, et al.. (2004). Photon lifetime dependence of modulation efficiency and K factor in 1.3μm self-assembled InAs∕GaAs quantum-dot lasers: Impact of capture time and maximum modal gain on modulation bandwidth. Applied Physics Letters. 85(18). 4145–4147. 74 indexed citations
3.
Otsubo, Koji, Nobuaki Hatori, Mitsuru Ishida, et al.. (2004). Temperature-Insensitive Eye-Opening under 10-Gb/s Modulation of 1.3-µm P-Doped Quantum-Dot Lasers without Current Adjustments. Japanese Journal of Applied Physics. 43(8B). L1124–L1124. 120 indexed citations
4.
Hatori, Nobuaki, T. Akiyama, H. Kuwatsuka, et al.. (2003). Design of a wide‐range arbitrary wavelength conversion module using four‐wave mixing in a quantum dot semiconductor optical amplifier. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 1333–1338. 1 indexed citations
5.
Nishijima, Y., et al.. (2002). InGaAs zone growth single crystal with convex solid–liquid interface toward the melt. Journal of Crystal Growth. 245(3-4). 228–236. 3 indexed citations
6.
Mukai, Kohki, Yoshiaki Nakata, Koji Otsubo, et al.. (2000). High characteristic temperature of near-1.3-μm InGaAs/GaAs quantum-dot lasers at room temperature. Applied Physics Letters. 76(23). 3349–3351. 50 indexed citations
7.
Nishijima, Y., Kazuo Nakajima, Koji Otsubo, & Hiroshi Ishikawa. (2000). InGaAs single crystal with a uniform composition in the growth direction grown on an InGaAs seed using the multicomponent zone growth method. Journal of Crystal Growth. 208(1-4). 171–178. 20 indexed citations
8.
Otsubo, Koji, et al.. (1999). 1.3 µm InGaAs/InAlGaAs Strained Quantum Well Lasers on InGaAs Ternary Substrates. Japanese Journal of Applied Physics. 38(3B). L312–L312. 14 indexed citations
9.
Nishijima, Y., Kazuo Nakajima, Koji Otsubo, & Hiroshi Ishikawa. (1999). InGaAs single crystal using a GaAs seed grown with the vertical gradient freeze technique. Journal of Crystal Growth. 197(4). 769–776. 15 indexed citations
10.
Nakajima, Kazuo, T. Kusunoki, & Koji Otsubo. (1997). Bridgman growth of compositionally graded InxGa1 − xAs (x = 0.05−0.30) single crystals for use as seeds for In0.25Ga0.75As crystal growth. Journal of Crystal Growth. 173(1-2). 42–50. 20 indexed citations
11.
Shoji, Hajime, et al.. (1996). In_ Ga_ AS/InAlGaAs/InGaP Strained Double Quantum Well Lasers on In_ Ga_ As Ternary Substrate. Japanese Journal of Applied Physics. 35(6). 6 indexed citations
12.
Shoji, Hajime, et al.. (1996). In0.38Ga0.62As/InAlGaAs/InGaP Strained Double Quantum Well Lasers on In0.21Ga0.79As Ternary Substrate. Japanese Journal of Applied Physics. 35(6B). L778–L778. 14 indexed citations
13.
Otsubo, Koji, et al.. (1995). High-Reflectivity In0.29Ga0.71As/In0.28Al0.72As Ternary Mirrors for 1.3 µm Vertical-Cavity Surface-Emitting Lasers Grown on GaAs. Japanese Journal of Applied Physics. 34(2B). L227–L227. 5 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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