Harnessing coupled nanolasers near exceptional points for directional emission
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914920457568256 |
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| author | Madiot, Guilhem Chateiller, Quentin Bazin, Alexandre Loren, Patricia Pantzas, Konstantinos Beaudoin, Grégoire Sagnes, Isabelle Raineri, Fabrice |
| author_facet | Madiot, Guilhem Chateiller, Quentin Bazin, Alexandre Loren, Patricia Pantzas, Konstantinos Beaudoin, Grégoire Sagnes, Isabelle Raineri, Fabrice |
| contents | Tailoring the losses of optical systems within the frame of non-Hermitian physics has appeared very fruitful in the last few years. In particular, the description of exceptional points (EPs) with coupled resonators have become widespread. The on-chip realization of these functionalities is highly significant for integrated nanophotonics, but requires fine control techniques of the nanodevice properties. Here, we demonstrate pump-controlled directional emission of two coupled nanolasers that distantly interact via an integrated waveguide. This coupling scheme unusually enables both frequency- and loss-couplings between two cavities, which can be advantageously exploited to reach EPs by either detuning the cavities or controlling the gain of nanolasers. The system can be readily reconfigured from bidirectional to unidirectional emission by adjusting the pump power. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_11483 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Harnessing coupled nanolasers near exceptional points for directional emission Madiot, Guilhem Chateiller, Quentin Bazin, Alexandre Loren, Patricia Pantzas, Konstantinos Beaudoin, Grégoire Sagnes, Isabelle Raineri, Fabrice Optics Mesoscale and Nanoscale Physics Tailoring the losses of optical systems within the frame of non-Hermitian physics has appeared very fruitful in the last few years. In particular, the description of exceptional points (EPs) with coupled resonators have become widespread. The on-chip realization of these functionalities is highly significant for integrated nanophotonics, but requires fine control techniques of the nanodevice properties. Here, we demonstrate pump-controlled directional emission of two coupled nanolasers that distantly interact via an integrated waveguide. This coupling scheme unusually enables both frequency- and loss-couplings between two cavities, which can be advantageously exploited to reach EPs by either detuning the cavities or controlling the gain of nanolasers. The system can be readily reconfigured from bidirectional to unidirectional emission by adjusting the pump power. |
| title | Harnessing coupled nanolasers near exceptional points for directional emission |
| topic | Optics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2408.11483 |