Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations
The acousto-optic modulation over a broad near-infrared (NIR) spectrum with high speed, excellent integrability, and relatively simple scheme is crucial for the application of next-generation opto-electronic and photonic devices. This study aims to experimentally demonstrate ultrafast acousto-optic...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2024-02-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2023-0769 |
| _version_ | 1797208518654164992 |
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| author | Park Tae Gwan Kim Chaeyoon Oh Eon-Taek Na Hong Ryeol Chun Seung-Hyun Lee Sunghun Rotermund Fabian |
| author_facet | Park Tae Gwan Kim Chaeyoon Oh Eon-Taek Na Hong Ryeol Chun Seung-Hyun Lee Sunghun Rotermund Fabian |
| author_sort | Park Tae Gwan |
| collection | DOAJ |
| description | The acousto-optic modulation over a broad near-infrared (NIR) spectrum with high speed, excellent integrability, and relatively simple scheme is crucial for the application of next-generation opto-electronic and photonic devices. This study aims to experimentally demonstrate ultrafast acousto-optic phenomena in the broad NIR spectral range of 0.77–1.1 eV (1130–1610 nm). Hundreds of GHz of light modulation are revealed in an all-optical configuration by combining ultrafast optical spectroscopy and light–sound conversion in 10–20 nm-thick bismuth selenide (Bi2Se3) van der Waals thin films. The modified optical transition energy and the line shape in the NIR band indicate phonon–photon interactions, resulting in a modulation of optical characteristics by the photoexcited interlayer vibrations in Bi2Se3. This all-optical, ultrafast acousto-optic modulation approach may open avenues for next-generation nanophotonic applications, including optical communications and processing, due to the synergistic combination of large-area capability, high photo-responsivity, and frequency tunability in the NIR spectral range. |
| first_indexed | 2024-04-24T09:40:05Z |
| format | Article |
| id | doaj.art-9c3fb261b3d1442ea54ced4079eec420 |
| institution | Directory Open Access Journal |
| issn | 2192-8614 |
| language | English |
| last_indexed | 2024-04-24T09:40:05Z |
| publishDate | 2024-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-9c3fb261b3d1442ea54ced4079eec4202024-04-15T07:42:04ZengDe GruyterNanophotonics2192-86142024-02-011371059106810.1515/nanoph-2023-0769Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrationsPark Tae Gwan0Kim Chaeyoon1Oh Eon-Taek2Na Hong Ryeol3Chun Seung-Hyun4Lee Sunghun5Rotermund Fabian6Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of KoreaDepartment of Physics, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of KoreaDepartment of Physics, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of KoreaDepartment of Physics and Astronomy, Sejong University, Seoul02504, Republic of KoreaDepartment of Physics and Astronomy, Sejong University, Seoul02504, Republic of KoreaDivision of Nanotechnology, Convergence Research Institute, Daegu Gyeongbuk Institute of Science and Technology, Daegu42988, Republic of KoreaDepartment of Physics, Korea Advanced Institute of Science and Technology, Daejeon34141, Republic of KoreaThe acousto-optic modulation over a broad near-infrared (NIR) spectrum with high speed, excellent integrability, and relatively simple scheme is crucial for the application of next-generation opto-electronic and photonic devices. This study aims to experimentally demonstrate ultrafast acousto-optic phenomena in the broad NIR spectral range of 0.77–1.1 eV (1130–1610 nm). Hundreds of GHz of light modulation are revealed in an all-optical configuration by combining ultrafast optical spectroscopy and light–sound conversion in 10–20 nm-thick bismuth selenide (Bi2Se3) van der Waals thin films. The modified optical transition energy and the line shape in the NIR band indicate phonon–photon interactions, resulting in a modulation of optical characteristics by the photoexcited interlayer vibrations in Bi2Se3. This all-optical, ultrafast acousto-optic modulation approach may open avenues for next-generation nanophotonic applications, including optical communications and processing, due to the synergistic combination of large-area capability, high photo-responsivity, and frequency tunability in the NIR spectral range.https://doi.org/10.1515/nanoph-2023-0769ultrafast opticsacousto-optic modulationphotoelastic effectcoherent acoustic phononstwo-dimensional materials |
| spellingShingle | Park Tae Gwan Kim Chaeyoon Oh Eon-Taek Na Hong Ryeol Chun Seung-Hyun Lee Sunghun Rotermund Fabian Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations Nanophotonics ultrafast optics acousto-optic modulation photoelastic effect coherent acoustic phonons two-dimensional materials |
| title | Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations |
| title_full | Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations |
| title_fullStr | Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations |
| title_full_unstemmed | Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations |
| title_short | Ultrafast acousto-optic modulation at the near-infrared spectral range by interlayer vibrations |
| title_sort | ultrafast acousto optic modulation at the near infrared spectral range by interlayer vibrations |
| topic | ultrafast optics acousto-optic modulation photoelastic effect coherent acoustic phonons two-dimensional materials |
| url | https://doi.org/10.1515/nanoph-2023-0769 |
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