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.
Large single-mode rib waveguides in GeSi-Si and Si-on-SiO/sub 2/
This map shows the geographic impact of K. Petermann'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 K. Petermann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites K. Petermann more than expected).
This network shows the impact of papers produced by K. Petermann. 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 K. Petermann. The network helps show where K. Petermann may publish in the future.
Co-authorship network of co-authors of K. Petermann
This figure shows the co-authorship network connecting the top 25 collaborators of K. Petermann.
A scholar is included among the top collaborators of K. Petermann 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 K. Petermann. K. Petermann is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Schmidt‐Langhorst, Carsten, C. Meuer, R. Ludwig, et al.. (2009). Quantum-dot semiconductor optical booster amplifier with ultrafast gain recovery for pattern-effect free amplification of 80 Gb/s RZ-OOK data signals. Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft). 1–2.2 indexed citations
9.
Runge, Patrick, K. Petermann, W. Brinker, M. Schlak, & B. Sartorius. (2009). Supercontinuum generating in ultralong SOAs — theory and experiment. Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft). 1–2.6 indexed citations
Griebner, Uwe, Valentin Petrov, K. Petermann, & V. Péters. (2004). Passively mode-locked Yb:Lu2O3 laser. Conference on Lasers and Electro-Optics.29 indexed citations
13.
Peters, E. Mix, L. Fornasiero, et al.. (2000). Efficient laser operation of Yb3+ : Sc2O3and spectroscopic characterization of Pr3+ in cubic sesquioxides. Laser Physics. 10(2). 417–421.28 indexed citations
14.
Mix, E., L. Fornasiero, E. Heumann, K. Petermann, & G. Hüber. (1999). Laser operation of Yb 3+ -doped Y 2 O 3 and related sesquioxides. Conference on Lasers and Electro-Optics.1 indexed citations
Petermann, K. & N. Schunk. (1988). Laser diode characteristics with external optical feedback. European Conference on Optical Communication. 353–359.1 indexed citations
18.
Arnold, G., et al.. (1978). Modulation behaviour of double heterostructure injection lasers with coherent light injection. 32. 129–136.4 indexed citations
19.
Petermann, K.. (1978). Modes in active waveguides with inhomogeneous gain profiles as applied to injection lasers. 32. 313–320.3 indexed citations
20.
Petermann, K.. (1976). Theory of microbending loss in monomode fibres with arbitrary refractive index profile. 30. 337–342.46 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.