LED-pumped room-temperature solid-state maser
File(s)
Published version
Author(s)
Type
Journal Article
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.
Date Issued
2025-07-09
Date Acceptance
2025-06-16
Citation
Communications Engineering, 2025, 4
ISSN
2731-3395
Publisher
Nature Portfolio
Journal / Book Title
Communications Engineering
Volume
4
Copyright Statement
© The Author(s) 2025 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/40634466
PII: 10.1038/s44172-025-00455-w
Subjects
Engineering
Engineering, Multidisciplinary
LASER
LIGHT-EMITTING-DIODES
Science & Technology
Technology
Publication Status
Published
Coverage Spatial
England
Article Number
122
Date Publish Online
2025-07-09