Evidence map›Paper›PMID 40634466›Full record

ArticleCommunications engineering2025

LED-pumped room-temperature solid-state maser.

Sophia Long, Lisa Lopez, Bethan Ford, François Balembois, Riccardo Montis, Wern Ng, Daan M Arroo, Neil McN Alford, Hamdi Torun, Juna Sathian

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Communications engineering, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Sophia LongDepartment of Mathematics, Physics and Electrical Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, UK.
Lisa LopezUniversité Paris-Saclay, Institut d'Optique Graduate School, CNRS, Laboratoire Charles Fabry, Palaiseau, France.
Bethan FordDepartment of Mathematics, Physics and Electrical Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, UK.
François BalemboisUniversité Paris-Saclay, Institut d'Optique Graduate School, CNRS, Laboratoire Charles Fabry, Palaiseau, France.
Riccardo MontisDepartment of Pure and Applied Sciences, University of Urbino, Campus Scientifico Enrico Mattei, Urbino, Italy.ORCID http://orcid.org/0000-0001-5239-1849
Wern NgDepartment of Materials, Imperial College London, London, UK.ORCID http://orcid.org/0000-0002-7550-4065
Daan M ArrooDepartment of Materials, Imperial College London, London, UK.ORCID http://orcid.org/0000-0002-1031-4965
Neil McN AlfordDepartment of Materials, Imperial College London, London, UK.ORCID http://orcid.org/0000-0003-1374-7851
Hamdi TorunDepartment of Mathematics, Physics and Electrical Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, UK.ORCID http://orcid.org/0000-0002-7882-286X
Juna SathianDepartment of Mathematics, Physics and Electrical Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, UK. juna.sathian@northumbria.ac.uk.ORCID http://orcid.org/0000-0002-6746-7110

Funding

RCUK | Engineering and Physical Sciences Research Council (EPSRC) EP/X016633/1Royal Society IES\R3\203061
6 · The paper itself

Abstract

Room-temperature MASERs (Microwave Amplification by Stimulated Emission of Radiation) amplify electromagnetic waves at microwave frequencies with minimal noise. We demonstrate a cost-effective LED-pumped maser using pentacene-doped para-terphenyl as the gain medium. Here, we show that LED light, which is brightness-enhanced and guided via a cerium-doped yttrium aluminium garnet luminescent concentrator, achieves persistent maser emission at 1.45 GHz with a duration of 200 µs and a microwave output power of 0.014 mW, surpassing previous non-laser pumped systems. Operating at low voltage, the LED-pumped maser ensures safety, reduced costs, and simple integration. Potential applications include sensitive magnetic resonance imaging, portable atomic clocks, quantum technologies, and enhanced deep-space radio astronomy.

Identifiers

PMID40634466
PMCPMC12241473

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.