Direct observation of exceptional points in coupled photonic-crystal lasers with asymmetric optical gains
Non-Hermitian optical systems have been shown to sustain lasing when they go from a PT-symmetric to a PT-symmetry-broken phase. Here, Kimet al. study this phase transition of lasing modes in partially graphene-covered coupled microcavities and show tuning of an exceptional point.
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Publishing Group
2016-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/ncomms13893 |