Terahertz Emission From Diamond Nitrogen-Vacancy Centers
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917703430701056 |
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| author | Kollarics, Sándor Márkus, Bence Gábor Kucsera, Robin Thiering, Gergő Gali, Ádám Németh, Gergely Kamarás, Katalin Forró, László Simon, Ferenc |
| author_facet | Kollarics, Sándor Márkus, Bence Gábor Kucsera, Robin Thiering, Gergő Gali, Ádám Németh, Gergely Kamarás, Katalin Forró, László Simon, Ferenc |
| contents | Coherent light sources emitting in the terahertz range are highly sought after for fundamental research and applications. THz lasers rely on achieving population inversion. We demonstrate the generation of THz radiation using nitrogen-vacancy (NV) centers in a diamond single crystal. Population inversion is achieved through the Zeeman splitting of the $S=1$ state in $15\ \text{T}$, resulting in a splitting of $0.42\ \text{THz}$, where the middle $S_z=0$ sublevel is selectively pumped by visible light. To detect the THz radiation, we utilize a phase-sensitive THz setup, optimized for electron spin resonance measurements (ESR). We determine the spin-lattice relaxation time up to $15\ \text{T}$ using the light-induced ESR measurement, which shows the dominance of phonon-mediated relaxation and the high efficacy of the population inversion. The THz radiation is tunable by the magnetic field, thus these findings may lead to the next generation of tunable coherent THz sources. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_16616 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Terahertz Emission From Diamond Nitrogen-Vacancy Centers Kollarics, Sándor Márkus, Bence Gábor Kucsera, Robin Thiering, Gergő Gali, Ádám Németh, Gergely Kamarás, Katalin Forró, László Simon, Ferenc Optics Other Condensed Matter Applied Physics Coherent light sources emitting in the terahertz range are highly sought after for fundamental research and applications. THz lasers rely on achieving population inversion. We demonstrate the generation of THz radiation using nitrogen-vacancy (NV) centers in a diamond single crystal. Population inversion is achieved through the Zeeman splitting of the $S=1$ state in $15\ \text{T}$, resulting in a splitting of $0.42\ \text{THz}$, where the middle $S_z=0$ sublevel is selectively pumped by visible light. To detect the THz radiation, we utilize a phase-sensitive THz setup, optimized for electron spin resonance measurements (ESR). We determine the spin-lattice relaxation time up to $15\ \text{T}$ using the light-induced ESR measurement, which shows the dominance of phonon-mediated relaxation and the high efficacy of the population inversion. The THz radiation is tunable by the magnetic field, thus these findings may lead to the next generation of tunable coherent THz sources. |
| title | Terahertz Emission From Diamond Nitrogen-Vacancy Centers |
| topic | Optics Other Condensed Matter Applied Physics |
| url | https://arxiv.org/abs/2406.16616 |