H.J. Unold

1.5k total citations
58 papers, 1.0k citations indexed

About

H.J. Unold is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Computational Mechanics. According to data from OpenAlex, H.J. Unold has authored 58 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 58 papers in Electrical and Electronic Engineering, 24 papers in Atomic and Molecular Physics, and Optics and 2 papers in Computational Mechanics. Recurrent topics in H.J. Unold's work include Semiconductor Lasers and Optical Devices (56 papers), Photonic and Optical Devices (54 papers) and Optical Network Technologies (15 papers). H.J. Unold is often cited by papers focused on Semiconductor Lasers and Optical Devices (56 papers), Photonic and Optical Devices (54 papers) and Optical Network Technologies (15 papers). H.J. Unold collaborates with scholars based in Germany, Switzerland and Belgium. H.J. Unold's co-authors include Rainer Michalzik, K.J. Ebeling, R. Jäger, U. Keller, E. Gini, Dirk Lorenser, D. J. H. C. Maas, M. Grabherr, B. Rudin and A. Aschwanden and has published in prestigious journals such as Applied Physics Letters, Optics Letters and Journal of Lightwave Technology.

In The Last Decade

H.J. Unold

54 papers receiving 934 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
H.J. Unold Germany	18	1.0k	705	40	31	30	58	1.0k
K.D. Choquette United States	9	584 0.6×	342 0.5×	66 1.6×	17 0.5×	12 0.4×	23	632
B. R. Hemenway United States	14	718 0.7×	309 0.4×	70 1.8×	54 1.7×	14 0.5×	48	747
M. W. Focht United States	17	906 0.9×	526 0.7×	30 0.8×	47 1.5×	20 0.7×	56	964
P. Wolf Germany	19	1.2k 1.1×	570 0.8×	13 0.3×	40 1.3×	70 2.3×	69	1.3k
N.M. Margalit United States	14	1.0k 1.0×	577 0.8×	11 0.3×	69 2.2×	24 0.8×	41	1.0k
Timo Aalto Finland	17	971 1.0×	508 0.7×	18 0.5×	99 3.2×	83 2.8×	109	1.0k
F. Pommereau France	17	1.2k 1.2×	724 1.0×	10 0.3×	55 1.8×	89 3.0×	133	1.2k
Yoshitaka Ohiso Japan	14	673 0.7×	338 0.5×	8 0.2×	24 0.8×	17 0.6×	72	690
Hans Christian Hansen Mulvad Denmark	21	1.7k 1.7×	781 1.1×	19 0.5×	48 1.5×	9 0.3×	143	1.7k
Douwe Geuzebroek Netherlands	15	1.1k 1.1×	655 0.9×	12 0.3×	96 3.1×	27 0.9×	69	1.1k

Countries citing papers authored by H.J. Unold

Since Specialization

Citations

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

Fields of papers citing papers by H.J. Unold

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H.J. Unold. 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 H.J. Unold. The network helps show where H.J. Unold may publish in the future.

Co-authorship network of co-authors of H.J. Unold

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Jezeršek, Matija, et al.. (2023). Control of Droplet Impact through Magnetic Actuation of Surface Microstructures. Advanced Materials Interfaces. 10(11). 2 indexed citations

Unold, H.J., et al.. (2007). Compact and efficient green laser modules. 1–1. 1 indexed citations

Maas, D. J. H. C., A.-R. Bellancourt, B. Rudin, et al.. (2007). MIXSELs - a new class of ultrafast semiconductor lasers. 1–1. 2 indexed citations

Unold, H.J., et al.. (2007). 3.5: Late‐News Paper : RGB Laser for Mobile Projection Devices. SID Symposium Digest of Technical Papers. 38(1). 16–18. 2 indexed citations

Maas, D. J. H. C., A.-R. Bellancourt, B. Rudin, et al.. (2007). Vertical integration of ultrafast semiconductor lasers. Applied Physics B. 88(4). 493–497. 100 indexed citations

Rudin, B., D. J. H. C. Maas, A.-R. Bellancourt, et al.. (2007). First Modelocked Integrated External-Cavity Surface Emitting Laser (MIXSEL). Advanced Solid-State Photonics. MF1–MF1.

Aschwanden, A., Dirk Lorenser, H.J. Unold, et al.. (2005). 21-W picosecond passively mode-locked external-cavity semiconductor laser. Optics Letters. 30(3). 272–272. 81 indexed citations

Aschwanden, A., Dirk Lorenser, H.J. Unold, et al.. (2004). 10-GHz passively mode-locked surface-emitting semiconductor laser with 1.4 W output power. Conference on Lasers and Electro-Optics. 2. 1037–1038. 2 indexed citations

Paschotta, R., L. Krainer, Steve Lecomte, et al.. (2004). Picosecond pulse sources with multi-GHz repetition rates and high output power. New Journal of Physics. 6. 174–174. 28 indexed citations

10.

Danckaert, Jan, Michaël Peeters, Cláudio R. Mirasso, et al.. (2004). Stochastic Polarization Switching Dynamics in Vertical-Cavity Surface-Emitting Lasers: Theory and Experiment. IEEE Journal of Selected Topics in Quantum Electronics. 10(5). 911–917. 14 indexed citations

11.

Unold, H.J., Rainer Michalzik, Hugo Thienpont, et al.. (2003). Polarization behavior and mode structure of vertical-cavity surface-emitting lasers with elliptical surface relief. VUBIR (Vrije Universiteit Brussel). 1 indexed citations

12.

Unold, H.J., et al.. (2003). Theoretical study of cold-cavity single-mode conditions in vertical-cavity surface-emitting lasers with incorporated two-dimensional photonic crystals. Journal of the Optical Society of America B. 20(12). 2442–2442. 19 indexed citations

13.

Knigge, Andrea, M. Zorn, H.J. Unold, et al.. (2003). High-performance vertical-cavity surface-emitting lasers with emission wavelengths from 650 nm to 670 nm. 7–8. 1 indexed citations

14.

Michalzik, Rainer, Karl Joachim Ebeling, M. Kicherer, et al.. (2001). High-Performance VCSELs for Optical Data Links. IEICE Transactions on Communications. 84(5). 1255–1264. 4 indexed citations

15.

Unold, H.J., et al.. (2001). Analysis of longitudinal mode wave guiding in vertical-cavity surface-emitting lasers with long monolithic cavity. Applied Physics Letters. 78(5). 586–588. 10 indexed citations

16.

Unold, H.J., et al.. (2001). Long monolithic cavity VCSELs for high singlemodeoutput power. Electronics Letters. 37(3). 178–179. 24 indexed citations

17.

Mederer, F., M. Kicherer, H.J. Unold, et al.. (2001). High performance selectively oxidized VCSELs and arrays for parallel high-speed optical interconnects. IEEE Transactions on Advanced Packaging. 24(2). 442–449. 8 indexed citations

18.

Unold, H.J., et al.. (2000). Improving single-mode VCSEL performance by introducing a long monolithic cavity. IEEE Photonics Technology Letters. 12(8). 939–941. 64 indexed citations

19.

Mederer, F., R. Jäger, P. Schnitzer, et al.. (2000). Multi-Gb/s graded-index POF data link with butt-coupled single-mode InGaAs VCSEL. IEEE Photonics Technology Letters. 12(2). 199–201. 17 indexed citations

20.

Mederer, F., et al.. (1999). Multigigabit/s perfluorinated graded-index plastic-optical-fiber data links with butt-coupled single-mode InGaAs VCSEL. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 3896. 273–273. 4 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