Takeya Unuma

455 total citations
39 papers, 373 citations indexed

About

Takeya Unuma is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Spectroscopy. According to data from OpenAlex, Takeya Unuma has authored 39 papers receiving a total of 373 indexed citations (citations by other indexed papers that have themselves been cited), including 33 papers in Electrical and Electronic Engineering, 30 papers in Atomic and Molecular Physics, and Optics and 13 papers in Spectroscopy. Recurrent topics in Takeya Unuma's work include Terahertz technology and applications (27 papers), Semiconductor Quantum Structures and Devices (22 papers) and Spectroscopy and Laser Applications (13 papers). Takeya Unuma is often cited by papers focused on Terahertz technology and applications (27 papers), Semiconductor Quantum Structures and Devices (22 papers) and Spectroscopy and Laser Applications (13 papers). Takeya Unuma collaborates with scholars based in Japan, Finland and France. Takeya Unuma's co-authors include Kazuhiko Hirakawa, Hideo Kishida, Arao Nakamura, Hidefumi Akiyama, Masahiro Yoshita, Motoyoshi Baba, Takeshi Noda, H. Sakaki, Teruyuki Takahashi and Makoto Kuwata‐Gonokami and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Physical Review B.

In The Last Decade

Takeya Unuma

36 papers receiving 359 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Takeya Unuma Japan 12 276 238 111 60 36 39 373
Michael C. Moore United States 8 174 0.6× 174 0.7× 73 0.7× 81 1.4× 8 0.2× 12 367
A. Bezinger Canada 11 283 1.0× 171 0.7× 112 1.0× 49 0.8× 4 0.1× 24 357
Z. Feit United States 10 274 1.0× 182 0.8× 66 0.6× 39 0.7× 19 0.5× 24 363
Theodore J. Ronningen United States 12 271 1.0× 242 1.0× 34 0.3× 19 0.3× 6 0.2× 36 352
Bradley F. Bowden United States 7 325 1.2× 135 0.6× 71 0.6× 45 0.8× 4 0.1× 11 478
B. Raynor Germany 12 546 2.0× 236 1.0× 21 0.2× 64 1.1× 8 0.2× 83 610
E. V. Nikitina Russia 14 325 1.2× 294 1.2× 55 0.5× 75 1.3× 5 0.1× 73 445
Shovon Pal Germany 12 169 0.6× 154 0.6× 50 0.5× 59 1.0× 5 0.1× 36 354
Elena Mavrona Switzerland 11 182 0.7× 130 0.5× 80 0.7× 87 1.4× 14 0.4× 21 391
V. G. Mokerov Russia 11 234 0.8× 253 1.1× 18 0.2× 31 0.5× 18 0.5× 76 350

Countries citing papers authored by Takeya Unuma

Since Specialization
Citations

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

Fields of papers citing papers by Takeya Unuma

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takeya Unuma

This figure shows the co-authorship network connecting the top 25 collaborators of Takeya Unuma. A scholar is included among the top collaborators of Takeya Unuma 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 Takeya Unuma. Takeya Unuma 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.
Sakamoto, Moritsugu, Masato Suzuki, Kohei Noda, et al.. (2024). Design and fabrication of a liquid crystal retarder for the mid- and far-infrared wavelength ranges. Optical Materials Express. 14(5). 1139–1139. 2 indexed citations
2.
3.
Unuma, Takeya, et al.. (2023). Effects of initial three-dimensional electron energy distribution on terahertz Bloch oscillations in a biased semiconductor superlattice. Applied Physics Express. 16(3). 31001–31001. 1 indexed citations
4.
Unuma, Takeya, et al.. (2022). Electronic states underlying peculiar Bloch oscillations in a biased semiconductor superlattice with interminiband mixing. Applied Physics Express. 15(7). 71009–71009. 2 indexed citations
5.
Unuma, Takeya, et al.. (2021). Reversibly controlled infrared transparency of conjugated polymer films incorporated into a compact electrochemical cell structure. Applied Optics. 61(3). 759–759. 1 indexed citations
6.
7.
Unuma, Takeya & Ryota Abe. (2021). Dephasing of terahertz Bloch oscillations in a GaAs-based narrow-minigap superlattice excited by tunable pump photon energy. Applied Physics Express. 14(5). 51009–51009. 6 indexed citations
8.
Unuma, Takeya, et al.. (2020). Dielectric properties of crystalline BiOCl in the terahertz region. OSA Continuum. 3(9). 2646–2646. 3 indexed citations
9.
Sasaki, Tomoyuki, Moritsugu Sakamoto, Kohei Noda, et al.. (2020). Subwavelength liquid crystal gratings for polarization-independent phase shifts in the terahertz spectral range. Optical Materials Express. 10(2). 240–240. 8 indexed citations
10.
Unuma, Takeya, et al.. (2016). Terahertz emission from biased conjugated polymers excited by femtosecond laser pulses. Applied Physics Express. 9(12). 121601–121601. 1 indexed citations
11.
Hirakawa, Kazuhiko, et al.. (2016). Capacitive response and room-temperature terahertz gain of a Wannier–Stark ladder system in GaAs-based superlattices. Applied Physics Express. 9(11). 112101–112101. 13 indexed citations
12.
Unuma, Takeya, et al.. (2013). Anisotropic terahertz complex conductivities in oriented polythiophene films. Applied Physics Letters. 103(21). 10 indexed citations
13.
Peiponen∥, Kai-Erik, Erik M. Vartiainen∥, Takeya Unuma, et al.. (2013). Dispersion relations for evaluating the complex refractive index of medium without the information of its thickness. Applied Physics Letters. 102(18). 10 indexed citations
14.
Unuma, Takeya, Y. Ino, Kai-Erik Peiponen∥, et al.. (2011). Causality-based method for determining the time origin in terahertz emission spectroscopy. Optics Express. 19(13). 12759–12759. 10 indexed citations
15.
Unuma, Takeya, Y. Ino, Makoto Kuwata‐Gonokami, et al.. (2010). Determination of the time origin by 
the maximum entropy method in 
time-domain terahertz emission spectroscopy. Optics Express. 18(15). 15853–15853. 14 indexed citations
16.
Unuma, Takeya, Y. Ino, Makoto Kuwata‐Gonokami, G. Bastard, & Kazuhiko Hirakawa. (2010). Transient Bloch oscillation with the symmetry-governed phase in semiconductor superlattices. Physical Review B. 81(12). 19 indexed citations
17.
Ferreira, R., Takeya Unuma, Kazuhiko Hirakawa, & G. Bastard. (2009). A Boltzmann Approach to Transient Bloch Emission from Semiconductor Superlattices. Applied Physics Express. 2. 62101–62101. 5 indexed citations
18.
Unuma, Takeya, et al.. (2008). Power dissipation spectra and terahertz intervalley transfer gain in bulk GaAs under high electric fields. Applied Physics Letters. 93(23). 9 indexed citations
19.
20.
Unuma, Takeya, Kensuke Kobayashi, Aishi Yamamoto, et al.. (2004). Intersubband electronic Raman scattering in narrow GaAs single quantum wells dominated by single-particle excitations. Physical Review B. 70(15). 3 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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