G. Hagel

418 total citations
16 papers, 297 citations indexed

About

G. Hagel is a scholar working on Atomic and Molecular Physics, and Optics, Statistics, Probability and Uncertainty and Electrical and Electronic Engineering. According to data from OpenAlex, G. Hagel has authored 16 papers receiving a total of 297 indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Atomic and Molecular Physics, and Optics, 6 papers in Statistics, Probability and Uncertainty and 3 papers in Electrical and Electronic Engineering. Recurrent topics in G. Hagel's work include Advanced Frequency and Time Standards (9 papers), Advanced Fiber Laser Technologies (8 papers) and Cold Atom Physics and Bose-Einstein Condensates (6 papers). G. Hagel is often cited by papers focused on Advanced Frequency and Time Standards (9 papers), Advanced Fiber Laser Technologies (8 papers) and Cold Atom Physics and Bose-Einstein Condensates (6 papers). G. Hagel collaborates with scholars based in France, Italy and Denmark. G. Hagel's co-authors include G. Giusfredi, Paolo De Natale, M. Inguscio, Pablo Cancio Pastor, Martina Knoop, C. Champenois, F. Vedel, M. Vedel, F. Biraben and F. Nez and has published in prestigious journals such as Physical Review Letters, Physical Review A and Physics Letters A.

In The Last Decade

G. Hagel

14 papers receiving 277 citations

Peers

G. Hagel

AMPO

SPECT

EEE

SPU

NHEP

G. Zinner Germany

Jin-Long Peng Taiwan

S. Gateva Bulgaria

M A Gubin Russia

Long-Sheng Ma United States

Ethan Clements United States

T. Binnewies Germany

В. Н. Сорокин Russia

Timothy Dinneen United States

G. Zinner Germany

G. Hagel

312 ×1.1

AMPO

64 ×1.1

SPECT

84 ×2.0

EEE

27 ×0.7

SPU

4 ×0.4

NHEP

Citations per year, relative to G. Hagel G. Hagel (= 1×) peers G. Zinner

Countries citing papers authored by G. Hagel

Since Specialization

Citations

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

Fields of papers citing papers by G. Hagel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of G. Hagel

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

All Works

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16 of 16 papers shown

Hagel, G., et al.. (2025). Performance and uses of the Refimeve metrological signal, 1000 km from the source. Journal of the Optical Society of America B. 42(11). 2429–2429.

Pedregosa-Gutierrez, J., et al.. (2013). Coherent internal state transfer by a three-photon STIRAP-like scheme for many-atom samples. Journal of Physics B Atomic Molecular and Optical Physics. 46(14). 145502–145502. 6 indexed citations

Hagel, G., et al.. (2009). Some aspects of simulation and realization of an optical reference cavity. Physical Review A. 80(6). 9 indexed citations

Champenois, C., et al.. (2008). Two-step Doppler cooling of a three-level ladder system with an intermediate metastable level. Physical Review A. 77(3). 4 indexed citations

Champenois, C., et al.. (2007). Terahertz Frequency Standard Based on Three-Photon Coherent Population Trapping. Physical Review Letters. 99(1). 13001–13001. 12 indexed citations

Champenois, C., et al.. (2007). From optical to terahertz, frequency metrology with a single ion. Annales de Physique. 32(2-3). 25–31. 2 indexed citations

Hagel, G., C. Champenois, Martina Knoop, et al.. (2007). Jitter reduction of the 729 nm clock laser for a Ca+ optical frequency standard. Proceedings of the IEEE International Frequency Control Symposium. 16. 123–127. 1 indexed citations

Hagel, G., et al.. (2005). Long-term stabilization of the length of an optical reference cavity. Review of Scientific Instruments. 76(12). 9 indexed citations

Giusfredi, G., Pablo Cancio Pastor, Paolo De Natale, et al.. (2005). Present status of the fine-structure frequencies of the 2³P helium level. Canadian Journal of Physics. 83(4). 301–310. 38 indexed citations

10.

Pastor, Pablo Cancio, et al.. (2004). Absolute Frequency Measurements of the23S1→23P0,1,2Atomic Helium Transitions around 1083 nm. Physical Review Letters. 92(2). 23001–23001. 88 indexed citations

11.

Plimmer, M. D., Thomas Badr, Stéphane Guérandel, et al.. (2004). Progress towards optical frequency standards based on two-photon transitions in atomic silver. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5449. 292–292. 1 indexed citations

12.

Champenois, C., et al.. (2004). Evaluation of the ultimate performances of a Ca+ single-ion frequency standard. Physics Letters A. 331(5). 298–311. 70 indexed citations

13.

Hagel, G., F. Nez, & F. Biraben. (2002). Analysis and observation, on an atomic resonance, of the frequency shift due to the length modulation of an optical cavity. Applied Optics. 41(36). 7702–7702. 6 indexed citations

14.

Hagel, G., Rémy Battesti, F. Nez, L. Julién, & F. Biraben. (2002). Observation of a Motional Stark Effect to Determine the Second-Order Doppler Effect. Physical Review Letters. 89(20). 203001–203001. 15 indexed citations

15.

Hagel, G., Catherine Schwob, L. Józefowski, et al.. (2001). Metrology of hydrogen atom: determination of the Rydberg constant and Lamb shifts. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 4269. 25–25. 1 indexed citations

16.

Hagel, G., et al.. (1999). Accurate measurement of the frequency of the 6S–8S two-photon transitions in cesium. Optics Communications. 160(1-3). 1–4. 35 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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