High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity
Chiral lasers with orbital angular momenta (OAM) are building blocks in developing high-dimensional integrated photonic devices. However, it remains demanding to arbitrarily manipulate the precise degree of chirality (DOC) and quantum numbers of OAM in microscale lasers. This study reports a strateg...
| Main Authors: | , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/171065 |
| _version_ | 1826124139287543808 |
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| author | Qiao, Zhen Yuan, Zhiyi Zhu, Song Gong, Chaoyang Liao, Yikai Gong, Xuerui Kim, Munho Zhang, Dawei Chen, Yu-Cheng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Qiao, Zhen Yuan, Zhiyi Zhu, Song Gong, Chaoyang Liao, Yikai Gong, Xuerui Kim, Munho Zhang, Dawei Chen, Yu-Cheng |
| author_sort | Qiao, Zhen |
| collection | NTU |
| description | Chiral lasers with orbital angular momenta (OAM) are building blocks in developing high-dimensional integrated photonic devices. However, it remains demanding to arbitrarily manipulate the precise degree of chirality (DOC) and quantum numbers of OAM in microscale lasers. This study reports a strategy to generate OAM microlasers with tunable DOCs and large quantum numbers through a ring-structured Fabry–Perot microcavity with nanoscale symmetry-broken geometry. By exploiting the uneven potential of photons distributed in a microcavity, the dissymmetry factor of OAM laser can be continuously tuned from −1 to +1 by manipulating optical pump positions. High-order OAM with tunable quantum numbers were also demonstrated, in which the largest quantum number reached up to 352. Finally, multivortex laser generation on-chip in spatial and temporal domains was accomplished. This study reveals the fundamental physics of symmetry-broken cavity and provides a simple yet scalable approach for manipulating the chirality of OAM microlasers, offering insights for high-dimensional information processing and optical communications. |
| first_indexed | 2024-10-01T06:15:47Z |
| format | Journal Article |
| id | ntu-10356/171065 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:15:47Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1710652023-10-13T15:40:54Z High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity Qiao, Zhen Yuan, Zhiyi Zhu, Song Gong, Chaoyang Liao, Yikai Gong, Xuerui Kim, Munho Zhang, Dawei Chen, Yu-Cheng School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Orbital Angular Momentum Integrated Photonic Devices Chiral lasers with orbital angular momenta (OAM) are building blocks in developing high-dimensional integrated photonic devices. However, it remains demanding to arbitrarily manipulate the precise degree of chirality (DOC) and quantum numbers of OAM in microscale lasers. This study reports a strategy to generate OAM microlasers with tunable DOCs and large quantum numbers through a ring-structured Fabry–Perot microcavity with nanoscale symmetry-broken geometry. By exploiting the uneven potential of photons distributed in a microcavity, the dissymmetry factor of OAM laser can be continuously tuned from −1 to +1 by manipulating optical pump positions. High-order OAM with tunable quantum numbers were also demonstrated, in which the largest quantum number reached up to 352. Finally, multivortex laser generation on-chip in spatial and temporal domains was accomplished. This study reveals the fundamental physics of symmetry-broken cavity and provides a simple yet scalable approach for manipulating the chirality of OAM microlasers, offering insights for high-dimensional information processing and optical communications. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Published version Funding: Agency for Science, Technology and Research (MTC IRG Grant No. M21K2c0106); Ministry of Education-Singapore (MOE-T2EP50120-0001). 2023-10-11T02:16:00Z 2023-10-11T02:16:00Z 2023 Journal Article Qiao, Z., Yuan, Z., Zhu, S., Gong, C., Liao, Y., Gong, X., Kim, M., Zhang, D. & Chen, Y. (2023). High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity. Optica, 10(7), 846-853. https://dx.doi.org/10.1364/OPTICA.486582 2334-2536 https://hdl.handle.net/10356/171065 10.1364/OPTICA.486582 2-s2.0-85165534366 7 10 846 853 en M21K2c0106 MOE-T2EP50120-0001 Optica © 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Orbital Angular Momentum Integrated Photonic Devices Qiao, Zhen Yuan, Zhiyi Zhu, Song Gong, Chaoyang Liao, Yikai Gong, Xuerui Kim, Munho Zhang, Dawei Chen, Yu-Cheng High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity |
| title | High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity |
| title_full | High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity |
| title_fullStr | High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity |
| title_full_unstemmed | High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity |
| title_short | High orbital angular momentum lasing with tunable degree of chirality in a symmetry-broken microcavity |
| title_sort | high orbital angular momentum lasing with tunable degree of chirality in a symmetry broken microcavity |
| topic | Engineering::Electrical and electronic engineering Orbital Angular Momentum Integrated Photonic Devices |
| url | https://hdl.handle.net/10356/171065 |
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