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Impact on the Sustainable Development Goals (SDGs)

Analysis of institutional authors

Díaz González, Francisco ManuelAuthorMateos Ferré, XavierAuthorRomero CAuthorRódenas AAuthorAguilo, MagdalenaAuthorDiaz FAuthor
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Article

Passively Q-switched femtosecond-laser-written thulium waveguide laser based on evanescent field interaction with carbon nanotubes

Publicated to:Photonics Research. 6 (10): 971-980 - 2018-10-01 6(10), DOI: 10.1364/PRJ.6.000971

Authors: Kifle, Esrom; Loiko, Pavel; Vazquez de Aldana, Javier Rodriguez; Romero, Carolina; Rodenas, Airan; Choi, Sun Yung; Bae, Ji Eun; Rotermund, Fabian; Zakharov, Viktor; Veniaminov, Andrey; Aguilo, Magdalena; Diaz, Francesc; Griebner, Uwe; Petrov, Valentin; Mateos, Xavier

Affiliations

CNR, Ist Foton & Nanotecnol, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy - Author
Fac. Química. Universitat Rovira i Virgili - Author
Institute for Photonics and Nanotechnologies, Rome - Author
ITMO Univ, 49 Kronverkskiy Pr, St Petersburg 197101, Russia - Author
Korea Adv Inst Sci & Technol, Dept Phys, 291 Daehak Ro, Daejeon 34141, South Korea - Author
Korea Advanced Institute of Science & - Author
Max Born Inst Nonlinear Opt & Short Pulse Spect, Max Born Str 2A, D-12489 Berlin, Germany - Author
Max Born Institute - Author
Química Física i Inorgànica. Universitat Rovira i Virgili - Author
Saint Petersburg National Research University of Information Technologies, Mechanics and Optics University ITMO - Author
Technology - Author
Univ Rovira & Virgili, Dept Quim Fis & Inorgan, Fis & Cristallog Mat & Nanomat FiCMA FiCNA EMaS, Campus Sescelades, E-43007 Tarragona, Spain - Author
Univ Salamanca, Aplicac Laser & Foton, E-37008 Salamanca, Spain - Author
Universidad de Salamanca - Author
Universitat Rovira i Virgili - Author
Universitat Rovira i Virgili. Universitat Rovira i Virgili - Author
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Abstract

© 2018 Chinese Laser Press. Surface channel waveguides (WGs) were fabricated in a monoclinic Tm3:KLu WO4 2 crystal by femtosecond direct laser writing (fs-DLW). The WGs consisted of a half-ring cladding with diameters of 50 and 60 μm located just beneath the crystal surface. They were characterized by confocal laser microscopy and μ-Raman spectroscopy, indicating a reduced crystallinity and stress-induced birefringence of the WG cladding. In continuous-wave (CW) mode, under Ti:sapphire laser pumping at 802 nm, the maximum output power reached 171.1 mW at 1847.4 nm, corresponding to a slope efficiency η of 37.8% for the 60 μm diameter WG. The WG propagation loss was 0.7 0.3 dB∕cm. The top surface of the WGs was spin-coated by a polymethyl methacrylate film containing randomly oriented (spaghetti-like) arc-discharge single-walled carbon nanotubes serving as a saturable absorber based on evanescent field coupling. Stable passively Q-switched (PQS) operation was achieved. The PQS 60 μm diameter WG laser generated a record output power of 150 mW at 1846.8 nm with η 34.6%. The conversion efficiency with respect to the CW mode was 87.6%. The best pulse characteristics (energy/duration) were 105.6 nJ/98 ns at a repetition rate of 1.42 MHz.

Keywords
Affordable and clean energy

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Photonics Research due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2018, it was in position 9/95, thus managing to position itself as a Q1 (Primer Cuartil), in the category Optics. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations provided by WoS (ESI, Clarivate), it yields a value for the citation normalization relative to the expected citation rate of: 1.42. This indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 14, 2024)

This information is reinforced by other indicators of the same type, which, although dynamic over time and dependent on the set of average global citations at the time of their calculation, consistently position the work at some point among the top 50% most cited in its field:

  • Weighted Average of Normalized Impact by the Scopus agency: 1.14 (source consulted: FECYT Feb 2024)
  • Field Citation Ratio (FCR) from Dimensions: 4.89 (source consulted: Dimensions May 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-05-25, the following number of citations:

  • WoS: 27
  • Scopus: 29
  • Google Scholar: 28
  • Open Alex: 23
  • OpenCitations: 23
Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-25:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 21 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: http://hdl.handle.net/20.500.11797/imarina4090811
Continuing with the social impact of the work, it is important to emphasize that, due to its content, it can be assigned to the area of interest of ODS 7 - Affordable and clean energy, with a probability of 71% according to the mBERT algorithm developed by Aurora University.
Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: German Democratic Republic; Germany; Italy; Republic of Korea; Russia.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Kifle E) and Last Author (Mateos X).

the author responsible for correspondence tasks has been Mateos X.