Single-LED-pumped, room-temperature, solid-state maser
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915713787101184 |
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| author | Newns, Michael Xu, Shirley Liu, Mingyang Cheng, Zike Yu, Yifan Huang, Ziqiu Attwood, Max Oxborrow, Mark |
| author_facet | Newns, Michael Xu, Shirley Liu, Mingyang Cheng, Zike Yu, Yifan Huang, Ziqiu Attwood, Max Oxborrow, Mark |
| contents | Through their ability to achieve cryogenic levels of noise performance while operating at room temperature, optically-pumped, solid-state (OPSS) masers show great promise as quantum sensors, oscillators, and amplifiers. We here demonstrate maser oscillation in a microwave cavity containing a crystal of pentacene-doped para-terphenyl (ptc:ptp) pumped by a single, chip-scale LED. Here, unlike previous work, the size of the pump source does not dominate the size of the maser system as a whole. This miniaturization is achieved through invasive optical pumping in the form of a waveguide, the tip of which is embedded into the maser crystal. Using experimental measurements combined with microwave and optical simulations, we find that our approach offers at least a factor-of-2 enhancement in cooperativity over end-on optical excitation. We use our simulations to define a figure of merit for maser pumping efficiency, and conclude that there remains significant headroom to improve the performance of ptc:ptp masers through improved optical design. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_20611 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Single-LED-pumped, room-temperature, solid-state maser Newns, Michael Xu, Shirley Liu, Mingyang Cheng, Zike Yu, Yifan Huang, Ziqiu Attwood, Max Oxborrow, Mark Quantum Physics Through their ability to achieve cryogenic levels of noise performance while operating at room temperature, optically-pumped, solid-state (OPSS) masers show great promise as quantum sensors, oscillators, and amplifiers. We here demonstrate maser oscillation in a microwave cavity containing a crystal of pentacene-doped para-terphenyl (ptc:ptp) pumped by a single, chip-scale LED. Here, unlike previous work, the size of the pump source does not dominate the size of the maser system as a whole. This miniaturization is achieved through invasive optical pumping in the form of a waveguide, the tip of which is embedded into the maser crystal. Using experimental measurements combined with microwave and optical simulations, we find that our approach offers at least a factor-of-2 enhancement in cooperativity over end-on optical excitation. We use our simulations to define a figure of merit for maser pumping efficiency, and conclude that there remains significant headroom to improve the performance of ptc:ptp masers through improved optical design. |
| title | Single-LED-pumped, room-temperature, solid-state maser |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.20611 |