LED-pumped room-temperature solid-state maser

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

doi:10.21203/rs.3.rs-4378028/v1

LED-pumped room-temperature solid-state maser

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

^*Corresponding author for this work

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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.

Original language	English
Article number	122
Pages (from-to)	1-7
Number of pages	7
Journal	Communications Engineering
Volume	4
Issue number	1
DOIs	https://doi.org/10.21203/rs.3.rs-4378028/v1 https://doi.org/10.1038/s44172-025-00455-w
Publication status	Published - 9 Jul 2025

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10.21203/rs.3.rs-4378028/v1Licence: CC BY
10.1038/s44172-025-00455-wLicence: CC BY

LED_pumped_Maser_COMMSENG-24-0316CAccepted author manuscript, 737 KBLicence: CC BY
s44172-025-00455-wFinal published version, 1.19 MBLicence: CC BY

Cite this

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title = "LED-pumped room-temperature solid-state maser",

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.",

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doi = "10.21203/rs.3.rs-4378028/v1",

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T1 - LED-pumped room-temperature solid-state maser

AU - Long, Sophia

AU - Lopez, Lisa

AU - Ford, Bethan

AU - Balembois, Francois

AU - Montis, Riccardo

AU - Ng, Wern

AU - Arroo, Daan M.

AU - Alford, Neil McN.

AU - Torun, Hamdi

AU - Sathian, Juna

PY - 2025/7/9

Y1 - 2025/7/9

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/105010257195

U2 - 10.21203/rs.3.rs-4378028/v1

DO - 10.21203/rs.3.rs-4378028/v1

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VL - 4

SP - 1

EP - 7

JO - Communications Engineering

JF - Communications Engineering

IS - 1

M1 - 122

ER -

LED-pumped room-temperature solid-state maser

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Towards LED-pumped Masers: a new class of room-temperature masers

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LED-pumped room-temperature solid-state maser

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Towards LED-pumped Masers: a new class of room-temperature masers

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