F. Hopfer

979 total citations
46 papers, 704 citations indexed

About

F. Hopfer is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Artificial Intelligence. According to data from OpenAlex, F. Hopfer has authored 46 papers receiving a total of 704 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Electrical and Electronic Engineering, 38 papers in Atomic and Molecular Physics, and Optics and 3 papers in Artificial Intelligence. Recurrent topics in F. Hopfer's work include Semiconductor Lasers and Optical Devices (39 papers), Semiconductor Quantum Structures and Devices (35 papers) and Photonic and Optical Devices (30 papers). F. Hopfer is often cited by papers focused on Semiconductor Lasers and Optical Devices (39 papers), Semiconductor Quantum Structures and Devices (35 papers) and Photonic and Optical Devices (30 papers). F. Hopfer collaborates with scholars based in Germany, Russia and United States. F. Hopfer's co-authors include D. Bimberg, G. Fiol, A. Mutig, N. N. Ledentsov, M. Küntz, A. R. Kovsh, N. N. Ledentsov, V. A. Haisler, V. A. Shchukin and I. L. Krestnikov and has published in prestigious journals such as Applied Physics Letters, Proceedings of the IEEE and Optics Express.

In The Last Decade

F. Hopfer

42 papers receiving 664 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
F. Hopfer Germany 16 644 545 65 47 39 46 704
G. Fiol Germany 23 1.3k 2.0× 864 1.6× 66 1.0× 24 0.5× 46 1.2× 79 1.3k
Bozhang Dong United States 14 493 0.8× 392 0.7× 37 0.6× 63 1.3× 21 0.5× 29 565
L. Occhi Switzerland 16 803 1.2× 445 0.8× 35 0.5× 37 0.8× 53 1.4× 31 824
A. Mutig Germany 21 1.1k 1.6× 577 1.1× 43 0.7× 17 0.4× 49 1.3× 60 1.1k
Theodore J. Morin United States 7 395 0.6× 313 0.6× 28 0.4× 56 1.2× 38 1.0× 19 452
W.Y. Jan United States 11 459 0.7× 374 0.7× 59 0.9× 23 0.5× 25 0.6× 16 509
K. Tokutome Japan 15 565 0.9× 423 0.8× 46 0.7× 8 0.2× 22 0.6× 42 611
M. A. Eriksson United States 9 205 0.3× 410 0.8× 67 1.0× 39 0.8× 66 1.7× 17 450
M. Laemmlin Germany 17 800 1.2× 697 1.3× 59 0.9× 27 0.6× 16 0.4× 36 855
M. Paillard France 9 421 0.7× 738 1.4× 225 3.5× 80 1.7× 42 1.1× 28 807

Countries citing papers authored by F. Hopfer

Since Specialization
Citations

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

Fields of papers citing papers by F. Hopfer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of F. Hopfer

This figure shows the co-authorship network connecting the top 25 collaborators of F. Hopfer. A scholar is included among the top collaborators of F. Hopfer 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 F. Hopfer. F. Hopfer 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.
Wang, Jingyi, M. Keever, Thomas R. Fanning, et al.. (2013). 28 Gb/s 850 nm oxide VCSEL development at Avago. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8639. 86390K–86390K. 5 indexed citations
2.
Panajotov, Krassimir, Hugo Thienpont, Marc Sciamanna, et al.. (2011). Polarization switching and polarization mode hopping in quantum dot vertical-cavity surface-emitting lasers. Optics Express. 19(3). 2476–2476. 23 indexed citations
3.
Sciamanna, Marc, Hugo Thienpont, Krassimir Panajotov, et al.. (2009). Polarization Switching in Quantum-Dot Vertical-Cavity Surface-Emitting Lasers. IEEE Photonics Technology Letters. 21(14). 1008–1010. 11 indexed citations
4.
Westbergh, Petter, Johan Gustavsson, Åsa Haglund, et al.. (2009). 32 Gbit/s multimode fibre transmission using high-speed, low current density 850 nm VCSEL. Electronics Letters. 45(7). 366–368. 61 indexed citations
5.
Ledentsov, N. N., James A. Lott, V. A. Shchukin, et al.. (2009). Quantum dot insertions in VCSELs from 840 to 1300 nm: growth, characterization, and device performance. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 7224. 72240P–72240P. 9 indexed citations
6.
Hopfer, F., A. Mutig, A. Strittmatter, et al.. (2008). High-speed directly and indirectly modulated VCSELs. Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft). 16. 1–6. 3 indexed citations
7.
Hopfer, F., M. Küntz, G. Fiol, et al.. (2008). <title>Quantum dot photonics: edge emitter, amplifier and VCSEL</title>. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 700902–700902. 4 indexed citations
8.
Hopfer, F., A. Mutig, G. Fiol, et al.. (2007). High Speed 1225 and 1250 nm VCSELs Based on Low-Temperature Grown Quantum Dots. 1–1. 3 indexed citations
9.
Bimberg, D., F. Hopfer, A. Mutig, et al.. (2007). Submonolayer Quantum Dots for High Speed Surface Emitting Lasers. Nanoscale Research Letters. 2(9). 417–29. 24 indexed citations
10.
Chalamala, Babu, Suzanne Thomas, P. Bhattacharya, et al.. (2007). OPTOELECTRONIC DEVICES BASED ON QUANTUM DOTS. 2 indexed citations
11.
Hopfer, F., A. Mutig, G. Fiol, et al.. (2007). 20 Gb/s 85$^{\circ}$C Error-Free Operation of VCSELs Based on Submonolayer Deposition of Quantum Dots. IEEE Journal of Selected Topics in Quantum Electronics. 13(5). 1302–1308. 47 indexed citations
12.
Scholz, Matthias, Oliver Benson, A. I. Toropov, et al.. (2007). Non-classical light emission from a single electrically driven quantum dot. Optics Express. 15(15). 9107–9107. 18 indexed citations
13.
Hopfer, F., I. Kaiander, A. Lochmann, et al.. (2006). Vertical-cavity surface-emitting quantum-dot laser with low threshold current grown by metal-organic vapor phase epitaxy. Applied Physics Letters. 89(6). 14 indexed citations
14.
Lochmann, A., E. Stock, O. Schulz, et al.. (2006). Electrically driven single quantum dot polarised single photon emitter. Electronics Letters. 42(13). 774–775. 40 indexed citations
15.
Williams, K.A., Tiras Y. Lin, Mark G. Thompson, et al.. (2006). Cascaded performance of quantum dot semiconductor optical amplifier in a recirculating loop. 1–2. 5 indexed citations
16.
Hopfer, F., A. Mutig, G. Fiol, et al.. (2006). 20 Gb/s 85 °C Error Free Operation of VCSEL based on Submonolayer Deposition of Quantum Dots. ofa4. 119–120. 5 indexed citations
17.
Hopfer, F., A. Mutig, M. Küntz, et al.. (2006). Single-mode submonolayer quantum-dot vertical-cavity surface-emitting lasers with high modulation bandwidth. Applied Physics Letters. 89(14). 79 indexed citations
18.
Laemmlin, M., G. Fiol, C. Meuer, et al.. (2006). Distortion-free optical amplification of 20–80 GHz modelocked laser pulses at 1.3 µm using quantum dots. Electronics Letters. 42(12). 697–699. 41 indexed citations
19.
Kim, S.K., Sang‐Ha Kim, I. Kaiander, et al.. (2005). Lithographic tuning of photonic-crystal unit-cell resonators with InGaAs∕GaAs quantum dots emitting at 1.2μm. Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena. 23(1). 252–256. 3 indexed citations
20.
Ribbat, Ch., R.L. Sellin, I. Kaiander, et al.. (2003). Complete suppression of filamentation and superior beam quality in quantum-dot lasers. Applied Physics Letters. 82(6). 952–954. 70 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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