“Maser-in-a-shoebox”: A portable plug-and-play maser device at room temperature and zero magnetic field

Masers, the microwave analogs of lasers, have seen a renaissance owing to the discovery of gain media that mase at room temperature and zero-applied magnetic field. However, despite the ease with which the devices can be demonstrated under ambient conditions, achieving the ubiquity and portability,...

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Veröffentlicht in:Applied physics letters 2024-01, Vol.124 (4)
Hauptverfasser: Ng, Wern, Wen, Yongqiang, Attwood, Max, Jones, Daniel C, Oxborrow, Mark, Alford, Neil McN, Arroo, Daan M.
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container_issue 4
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container_title Applied physics letters
container_volume 124
creator Ng, Wern
Wen, Yongqiang
Attwood, Max
Jones, Daniel C
Oxborrow, Mark
Alford, Neil McN
Arroo, Daan M.
description Masers, the microwave analogs of lasers, have seen a renaissance owing to the discovery of gain media that mase at room temperature and zero-applied magnetic field. However, despite the ease with which the devices can be demonstrated under ambient conditions, achieving the ubiquity and portability, which lasers enjoy, has to date remained challenging. We present a maser device with a miniaturized maser cavity, gain material, and laser pump source that fits within the size of a shoebox. The gain medium used is pentacene-doped para-terphenyl, and it is shown to give a strong masing signal with a peak power of −5 dBm even within a smaller form factor. The device is also shown to mase at different frequencies within a small range of 1.5 MHz away from the resonant frequency. The portability and simplicity of the device, which weighs under 5 kg, paves the way for demonstrators particularly in the areas of low-noise amplifiers, quantum sensors, cavity quantum electrodynamics, and long-range communications.
doi_str_mv 10.1063/5.0181318
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source AIP Journals Complete; Alma/SFX Local Collection
subjects Form factors
Lasers
Magnetic fields
Masers
Portable equipment
Quantum electrodynamics
Quantum sensors
Resonant frequencies
Room temperature
title “Maser-in-a-shoebox”: A portable plug-and-play maser device at room temperature and zero magnetic field
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