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| Format: | Preprint |
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2024
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| Online-Zugang: | https://arxiv.org/abs/2411.14772 |
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| _version_ | 1866912130425421824 |
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| author | Wang, Yilan Tian, Feng Huang, Wendi Zhou, Taojie |
| author_facet | Wang, Yilan Tian, Feng Huang, Wendi Zhou, Taojie |
| contents | Nanolasers, characterized by enhanced optical localization at subwavelength scale, have emerged as promising coherent light sources for ultra-compact, high-speed and energy-efficient photonic integrated circuits. Twisted photonic crystal nanocavity, constructed by stacking two layers of photonic crystal structure with a specified rotation angle, enables strong light confinement with an ultra-small mode volume and an extremely high quality factor. The twisted angle can be randomly selected, providing the possibility of actively tuning the resonant wavelength and optical mode distribution within a nanoscale twisted cavity. Here, we demonstrate large-angle twisted single-mode photonic crystal nanolasers operating in the C-band with an exceptionally ultra-compact footprint of approximately 25 $μm^2$ and an ultra-small mode volume of 0.47 $(λ/n)^3$. The reported twisted photonic crystal nanolasers are optically pumped at room temperature with an ultra-low threshold of $\sim$ 1.25 $kW/cm^2$. Our work provides a prospective method for easily constructing robust nanolasers by twisting angles, and paves the way for achieving high-performance nanoscale coherent light sources for densely integrated photonic chips. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_14772 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large-angle twisted photonic crystal semiconductor nanolasers with ultra-low thresholds operating in the C-band Wang, Yilan Tian, Feng Huang, Wendi Zhou, Taojie Optics Nanolasers, characterized by enhanced optical localization at subwavelength scale, have emerged as promising coherent light sources for ultra-compact, high-speed and energy-efficient photonic integrated circuits. Twisted photonic crystal nanocavity, constructed by stacking two layers of photonic crystal structure with a specified rotation angle, enables strong light confinement with an ultra-small mode volume and an extremely high quality factor. The twisted angle can be randomly selected, providing the possibility of actively tuning the resonant wavelength and optical mode distribution within a nanoscale twisted cavity. Here, we demonstrate large-angle twisted single-mode photonic crystal nanolasers operating in the C-band with an exceptionally ultra-compact footprint of approximately 25 $μm^2$ and an ultra-small mode volume of 0.47 $(λ/n)^3$. The reported twisted photonic crystal nanolasers are optically pumped at room temperature with an ultra-low threshold of $\sim$ 1.25 $kW/cm^2$. Our work provides a prospective method for easily constructing robust nanolasers by twisting angles, and paves the way for achieving high-performance nanoscale coherent light sources for densely integrated photonic chips. |
| title | Large-angle twisted photonic crystal semiconductor nanolasers with ultra-low thresholds operating in the C-band |
| topic | Optics |
| url | https://arxiv.org/abs/2411.14772 |