Nanoscale resolved mapping of the dipole emission of hBN color centers with a scattering-type scanning near-field optical microscope
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arXiv
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| Autores principales: | , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911415020814336 |
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| author | Niehues, Iris Wigger, Daniel Kaltenecker, Korbinian Klein-Hitpass, Annika Roelli, Philippe Dąbrowska, Aleksandra K. Ludwiczak, Katarzyna Tatarczak, Piotr Becker, Janne O. Schmidt, Robert Schnell, Martin Binder, Johannes Wysmołek, Andrzej Hillenbrand, Rainer |
| author_facet | Niehues, Iris Wigger, Daniel Kaltenecker, Korbinian Klein-Hitpass, Annika Roelli, Philippe Dąbrowska, Aleksandra K. Ludwiczak, Katarzyna Tatarczak, Piotr Becker, Janne O. Schmidt, Robert Schnell, Martin Binder, Johannes Wysmołek, Andrzej Hillenbrand, Rainer |
| contents | Color centers in hexagonal boron nitride (hBN) are promising candidates as quantum light sources for future technologies. In this work, we utilize a scattering-type near-field optical microscope (s-SNOM) to study the photoluminescence (PL) emission characteristics of such quantum emitters in metalorganic vapor phase epitaxy grown hBN. On the one hand, we demonstrate direct near-field optical excitation and emission through interaction with the nanofocus of the tip resulting in a sub-diffraction limited tip-enhanced PL hotspot. On the other hand, we show that indirect excitation and emission via scattering from the tip significantly increases the recorded PL intensity. This demonstrates that the tip-assisted PL (TAPL) process efficiently guides the generated light to the detector. We apply the TAPL method to map the in-plane dipole orientations of the hBN color centers on the nanoscale. This work promotes the widely available s-SNOM approach to applications in the quantum domain including characterization and optical control. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_15216 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nanoscale resolved mapping of the dipole emission of hBN color centers with a scattering-type scanning near-field optical microscope Niehues, Iris Wigger, Daniel Kaltenecker, Korbinian Klein-Hitpass, Annika Roelli, Philippe Dąbrowska, Aleksandra K. Ludwiczak, Katarzyna Tatarczak, Piotr Becker, Janne O. Schmidt, Robert Schnell, Martin Binder, Johannes Wysmołek, Andrzej Hillenbrand, Rainer Mesoscale and Nanoscale Physics Optics Color centers in hexagonal boron nitride (hBN) are promising candidates as quantum light sources for future technologies. In this work, we utilize a scattering-type near-field optical microscope (s-SNOM) to study the photoluminescence (PL) emission characteristics of such quantum emitters in metalorganic vapor phase epitaxy grown hBN. On the one hand, we demonstrate direct near-field optical excitation and emission through interaction with the nanofocus of the tip resulting in a sub-diffraction limited tip-enhanced PL hotspot. On the other hand, we show that indirect excitation and emission via scattering from the tip significantly increases the recorded PL intensity. This demonstrates that the tip-assisted PL (TAPL) process efficiently guides the generated light to the detector. We apply the TAPL method to map the in-plane dipole orientations of the hBN color centers on the nanoscale. This work promotes the widely available s-SNOM approach to applications in the quantum domain including characterization and optical control. |
| title | Nanoscale resolved mapping of the dipole emission of hBN color centers with a scattering-type scanning near-field optical microscope |
| topic | Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2501.15216 |