Alex Quema

578 total citations
22 papers, 442 citations indexed

About

Alex Quema is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Spectroscopy. According to data from OpenAlex, Alex Quema has authored 22 papers receiving a total of 442 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Electrical and Electronic Engineering, 14 papers in Atomic and Molecular Physics, and Optics and 4 papers in Spectroscopy. Recurrent topics in Alex Quema's work include Terahertz technology and applications (16 papers), Photonic and Optical Devices (8 papers) and Semiconductor Quantum Structures and Devices (8 papers). Alex Quema is often cited by papers focused on Terahertz technology and applications (16 papers), Photonic and Optical Devices (8 papers) and Semiconductor Quantum Structures and Devices (8 papers). Alex Quema collaborates with scholars based in Japan and Philippines. Alex Quema's co-authors include Nobuhiko Sarukura, Shingo Ono, Hiroshi Takahashi, Masahiro Goto, Akira Yoshikawa, Tsuguo Fukuda, Shigeki Nashima, Hisashi Sumikura, Masanori Hangyo and Takeshi Nagashima and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Japanese Journal of Applied Physics.

In The Last Decade

Alex Quema

21 papers receiving 417 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Alex Quema Japan 11 386 176 74 70 57 22 442
Toshiaki Asahi Japan 13 481 1.2× 294 1.7× 32 0.4× 238 3.4× 26 0.5× 44 536
László Pálfalvi Hungary 8 357 0.9× 330 1.9× 94 1.3× 56 0.8× 21 0.4× 15 440
E. A. Mashkovich Netherlands 12 245 0.6× 275 1.6× 52 0.7× 50 0.7× 50 0.9× 29 386
Y. Hirota Japan 14 435 1.1× 189 1.1× 30 0.4× 54 0.8× 10 0.2× 38 499
Émilie Hérault France 12 372 1.0× 305 1.7× 39 0.5× 64 0.9× 23 0.4× 30 415
Eiichi Matsubara Japan 12 368 1.0× 316 1.8× 116 1.6× 139 2.0× 31 0.5× 34 519
Timothy J. Carrig United States 14 722 1.9× 541 3.1× 74 1.0× 168 2.4× 38 0.7× 43 778
I. I. Naumova Russia 13 331 0.9× 368 2.1× 76 1.0× 68 1.0× 37 0.6× 48 445
Jean-François Lampin France 10 273 0.7× 160 0.9× 60 0.8× 28 0.4× 50 0.9× 24 335
Zhihui Lü China 12 250 0.6× 336 1.9× 175 2.4× 47 0.7× 35 0.6× 21 436

Countries citing papers authored by Alex Quema

Since Specialization
Citations

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

Fields of papers citing papers by Alex Quema

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Alex Quema

This figure shows the co-authorship network connecting the top 25 collaborators of Alex Quema. A scholar is included among the top collaborators of Alex Quema 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 Alex Quema. Alex Quema 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.
Estacio, Elmer, Alex Quema, Carlito S. Ponseca, et al.. (2006). Below-bandgap excited, terahertz emission of optically pumped GaAs/AlGaAs multiple quantum wells. Journal of Photochemistry and Photobiology A Chemistry. 183(3). 334–337. 3 indexed citations
2.
Goto, Masahiro, Alex Quema, Hiroshi Takahashi, Shingo Ono, & Nobuhiko Sarukura. (2006). Polarization-preserving teflon photonic crystal fiber waveguide for THz radiation. 289. 139–140.
3.
4.
Morikawa, Osamu, Alex Quema, Shigeki Nashima, et al.. (2006). Faraday ellipticity and Faraday rotation of a doped-silicon wafer studied by terahertz time-domain spectroscopy. Journal of Applied Physics. 100(3). 42 indexed citations
5.
Reyes, Glenda De Los, Alex Quema, Carlito S. Ponseca, et al.. (2006). Low-loss single-mode terahertz waveguiding using Cytop. Applied Physics Letters. 89(21). 23 indexed citations
6.
Ono, Shingo, Hidetoshi Murakami, Alex Quema, et al.. (2005). Generation of terahertz radiation using zinc oxide as photoconductive material excited by ultraviolet pulses. Applied Physics Letters. 87(26). 34 indexed citations
7.
Quema, Alex, et al.. (2005). Photonic-crystal-fiber pigtail device integrated with lens-duct optics for terahertz radiation coupling. Applied Physics Letters. 87(15). 10 indexed citations
8.
Ono, Shingo, Alex Quema, Hidetoshi Murakami, et al.. (2005). Band-Structure Design of Fluoride Complex Materials for Deep-Ultraviolet Light-Emitting Diodes. Japanese Journal of Applied Physics. 44(10R). 7285–7285. 20 indexed citations
9.
Goto, Masahiro, Alex Quema, Hiroshi Takahashi, Shingo Ono, & Nobuhiko Sarukura. (2004). Plastic photonic crystal fiber as terahertz waveguide. Conference on Lasers and Electro-Optics. 1. 2 indexed citations
10.
Takahashi, Hiroshi, Masahiro Sakai, Alex Quema, et al.. (2004). Terahertz radiation from InAs with various surface orientations under magnetic field irradiated with femtosecond optical pulses at different wavelengths. Journal of Applied Physics. 95(9). 4545–4550. 9 indexed citations
11.
Takahashi, Hiroshi, Michael P. Hasselbeck, Alex Quema, et al.. (2004). Broadband Terahertz Radiation Emitter Using Femtosecond-Laser-Irradiated n-Type InAs under Magnetic Field. Japanese Journal of Applied Physics. 43(No. 2A). L221–L223. 4 indexed citations
12.
Takahashi, Hiroshi, Alex Quema, Masahiro Goto, et al.. (2004). Physical Origin of Magnetically Induced Periodic Structure Observed in Terahertz Radiation Spectrum Emitted from InAs. Japanese Journal of Applied Physics. 43(8A). L1017–L1017. 1 indexed citations
13.
Goto, Masahiro, Alex Quema, Hiroshi Takahashi, Shingo Ono, & Nobuhiko Sarukura. (2004). Teflon Photonic Crystal Fiber as Terahertz Waveguide. Japanese Journal of Applied Physics. 43(No. 2B). L317–L319. 177 indexed citations
14.
Ono, Shingo, Alex Quema, Masahiro Goto, et al.. (2004). Design of wide-gap fluoride heterostructures for deep ultraviolet optical devices. Journal of Applied Physics. 96(12). 7655–7659. 28 indexed citations
15.
Takahashi, Hiroshi, Alex Quema, Masahiro Goto, Shingo Ono, & Nobuhiko Sarukura. (2003). Terahertz Radiation Mechanism from Femtosecond-Laser-Irradiated InAs (100) Surface. Japanese Journal of Applied Physics. 42(Part 2, No. 10B). L1259–L1261. 19 indexed citations
16.
Takahashi, Hiroshi, Alex Quema, Masahiro Sakai, et al.. (2003). Magnetic-Field-Induced Enhancement of THz-Radiation Power from Femtosecond-Laser-Irradiated InAs up to 27 T. Japanese Journal of Applied Physics. 42(Part 2, No. 5B). L532–L534. 5 indexed citations
17.
Takahashi, Hiroshi, et al.. (2003). Excitation fluence dependence of terahertz radiation mechanism from femtosecond-laser-irradiated InAs under magnetic field. Applied Physics Letters. 83(6). 1068–1070. 22 indexed citations
18.
Quema, Alex, Hiroshi Takahashi, Masahiro Sakai, et al.. (2003). Identification of Potential Estrogenic Environmental Pollutants by Terahertz Transmission Spectroscopy. Japanese Journal of Applied Physics. 42(Part 2, No. 8A). L932–L934. 18 indexed citations
19.
Quema, Alex, et al.. (2001). Terahertz-Time Domain Spectroscopic Measurement of Moderately-Doped Silicon Using InAs Emitter under Magnetic Field. Japanese Journal of Applied Physics. 40(2R). 867–867. 4 indexed citations
20.
Ichinose, Noboru & Alex Quema. (1992). Preparation and superconducting properties of the Cd-substituted Bi-Sr-Ca-Cu-O system. Journal of Magnetism and Magnetic Materials. 104-107. 565–567. 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Toshiaki Asahi Breakdown of academic impact, for papers by László Pálfalvi Breakdown of academic impact, for papers by E. A. Mashkovich Breakdown of academic impact, for papers by Y. Hirota Breakdown of academic impact, for papers by Émilie Hérault Breakdown of academic impact, for papers by Eiichi Matsubara Breakdown of academic impact, for papers by Timothy J. Carrig Breakdown of academic impact, for papers by I. I. Naumova Breakdown of academic impact, for papers by Jean-François Lampin Breakdown of academic impact, for papers by Zhihui Lü
Rankless by CCL
2026