Tunable optical vortex from a nanogroove-structured optofluidic microlaser
Optical vortices with tunable properties in multiple dimensions are highly desirable in modern photonics, particularly for broadly tunable wavelengths and topological charges at the micrometer scale. Compared to solid-state approaches, here we demonstrate tunable optical vortices through the fusion...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/162245 |
| _version_ | 1826113904992845824 |
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| author | Qiao, Zhen Gong, Chaoyang Liao, Yikai Wang, Chenlu Chan, Kok Ken Zhu, Song Kim, Munho Chen, Yu-Cheng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Qiao, Zhen Gong, Chaoyang Liao, Yikai Wang, Chenlu Chan, Kok Ken Zhu, Song Kim, Munho Chen, Yu-Cheng |
| author_sort | Qiao, Zhen |
| collection | NTU |
| description | Optical vortices with tunable properties in multiple dimensions are highly desirable in modern photonics, particularly for broadly tunable wavelengths and topological charges at the micrometer scale. Compared to solid-state approaches, here we demonstrate tunable optical vortices through the fusion of optofluidics and vortex beams in which the handedness, topological charges, and lasing wavelengths could be fully adjusted and dynamically controlled. Nanogroove structures inscribed in Fabry-Pérot optofluidic microcavities were proposed to generate optical vortices by converting Hermite-Gaussian laser modes. Topological charges could be controlled by tuning the lengths of the nanogroove structures. Vortex laser beams spanning a wide spectral band (430-630 nm) were achieved by alternating different liquid gain materials. Finally, dynamic switching of vortex laser wavelengths in real-time was realized through an optofluidic vortex microlaser device. The findings provide a robust yet flexible approach for generating on-chip vortex sources with multiple dimensions, high tunability, and reconfigurability. |
| first_indexed | 2024-10-01T03:30:32Z |
| format | Journal Article |
| id | ntu-10356/162245 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:30:32Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1622452022-10-11T01:55:06Z Tunable optical vortex from a nanogroove-structured optofluidic microlaser Qiao, Zhen Gong, Chaoyang Liao, Yikai Wang, Chenlu Chan, Kok Ken Zhu, Song Kim, Munho Chen, Yu-Cheng School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Optical Vortex Optofluidic Microlaser Optical vortices with tunable properties in multiple dimensions are highly desirable in modern photonics, particularly for broadly tunable wavelengths and topological charges at the micrometer scale. Compared to solid-state approaches, here we demonstrate tunable optical vortices through the fusion of optofluidics and vortex beams in which the handedness, topological charges, and lasing wavelengths could be fully adjusted and dynamically controlled. Nanogroove structures inscribed in Fabry-Pérot optofluidic microcavities were proposed to generate optical vortices by converting Hermite-Gaussian laser modes. Topological charges could be controlled by tuning the lengths of the nanogroove structures. Vortex laser beams spanning a wide spectral band (430-630 nm) were achieved by alternating different liquid gain materials. Finally, dynamic switching of vortex laser wavelengths in real-time was realized through an optofluidic vortex microlaser device. The findings provide a robust yet flexible approach for generating on-chip vortex sources with multiple dimensions, high tunability, and reconfigurability. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) All the authors would like to thank A*STAR for support. This research is supported by A*STAR under its AME IRG Grant (project no. A20E5c0085). M.K. is also thankful for the support from ACRF Tier 2 (Grant T2EP50120-0003). 2022-10-11T01:55:06Z 2022-10-11T01:55:06Z 2022 Journal Article Qiao, Z., Gong, C., Liao, Y., Wang, C., Chan, K. K., Zhu, S., Kim, M. & Chen, Y. (2022). Tunable optical vortex from a nanogroove-structured optofluidic microlaser. Nano Letters, 22(3), 1425-1432. https://dx.doi.org/10.1021/acs.nanolett.1c04065 1530-6984 https://hdl.handle.net/10356/162245 10.1021/acs.nanolett.1c04065 34817181 2-s2.0-85120537906 3 22 1425 1432 en A20E5c0085 T2EP50120-0003 Nano Letters © 2021 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Optical Vortex Optofluidic Microlaser Qiao, Zhen Gong, Chaoyang Liao, Yikai Wang, Chenlu Chan, Kok Ken Zhu, Song Kim, Munho Chen, Yu-Cheng Tunable optical vortex from a nanogroove-structured optofluidic microlaser |
| title | Tunable optical vortex from a nanogroove-structured optofluidic microlaser |
| title_full | Tunable optical vortex from a nanogroove-structured optofluidic microlaser |
| title_fullStr | Tunable optical vortex from a nanogroove-structured optofluidic microlaser |
| title_full_unstemmed | Tunable optical vortex from a nanogroove-structured optofluidic microlaser |
| title_short | Tunable optical vortex from a nanogroove-structured optofluidic microlaser |
| title_sort | tunable optical vortex from a nanogroove structured optofluidic microlaser |
| topic | Engineering::Electrical and electronic engineering Optical Vortex Optofluidic Microlaser |
| url | https://hdl.handle.net/10356/162245 |
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