Room-Temperature Quasi-Continuous-Wave Pentacene Maser Pumped by an Invasive Ce:YAG Luminescent Concentrator

Hao Wu; Xiangyu Xie; Wern Ng; Seif Mehanna; Yingxu Li; Max Attwood; Mark Oxborrow

doi:10.1103/PhysRevApplied.14.064017

Room-Temperature Quasi-Continuous-Wave Pentacene Maser Pumped by an Invasive Ce:YAG Luminescent Concentrator

Hao Wu, Xiangyu Xie, Wern Ng, Seif Mehanna, Yingxu Li, Max Attwood, Mark Oxborrow^*

^*Corresponding author for this work

Imperial College London

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We present in this work a quasi-continuous-wave (cw) pentacene maser operating at 1.45 GHz in the Earth's magnetic field at room temperature with a duration of approximately 4 ms and an output power of up to -25 dBm. The maser is optically pumped by a cerium-doped yttrium-aluminum-garnet (YAG) (Ce:YAG) luminescent concentrator (LC), the wedge-shaped output of which is embedded inside a 0.1% pentacene-doped para-terphenyl (Pc:Ptp) crystal. The pumped crystal is located inside a ring of strontium titanate (STO) that supports a TE01δ mode of high magnetic Purcell factor. Combined with simulations, our results indicate that cw operation of pentacene masers at room temperature is perfectly feasible so long as excessive heating of the crystal is avoided.

Original language	English
Article number	064017
Journal	Physical Review Applied
Volume	14
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevApplied.14.064017
Publication status	Published - 4 Dec 2020
Externally published	Yes

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title = "Room-Temperature Quasi-Continuous-Wave Pentacene Maser Pumped by an Invasive Ce:YAG Luminescent Concentrator",

abstract = "We present in this work a quasi-continuous-wave (cw) pentacene maser operating at 1.45 GHz in the Earth's magnetic field at room temperature with a duration of approximately 4 ms and an output power of up to -25 dBm. The maser is optically pumped by a cerium-doped yttrium-aluminum-garnet (YAG) (Ce:YAG) luminescent concentrator (LC), the wedge-shaped output of which is embedded inside a 0.1\% pentacene-doped para-terphenyl (Pc:Ptp) crystal. The pumped crystal is located inside a ring of strontium titanate (STO) that supports a TE01δ mode of high magnetic Purcell factor. Combined with simulations, our results indicate that cw operation of pentacene masers at room temperature is perfectly feasible so long as excessive heating of the crystal is avoided.",

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AU - Ng, Wern

AU - Mehanna, Seif

AU - Li, Yingxu

AU - Attwood, Max

AU - Oxborrow, Mark

PY - 2020/12/4

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AB - We present in this work a quasi-continuous-wave (cw) pentacene maser operating at 1.45 GHz in the Earth's magnetic field at room temperature with a duration of approximately 4 ms and an output power of up to -25 dBm. The maser is optically pumped by a cerium-doped yttrium-aluminum-garnet (YAG) (Ce:YAG) luminescent concentrator (LC), the wedge-shaped output of which is embedded inside a 0.1% pentacene-doped para-terphenyl (Pc:Ptp) crystal. The pumped crystal is located inside a ring of strontium titanate (STO) that supports a TE01δ mode of high magnetic Purcell factor. Combined with simulations, our results indicate that cw operation of pentacene masers at room temperature is perfectly feasible so long as excessive heating of the crystal is avoided.

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Room-Temperature Quasi-Continuous-Wave Pentacene Maser Pumped by an Invasive Ce:YAG Luminescent Concentrator

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