| Autor: |
Ling-Fang Wang, Xiao-Tian Cheng, Xiao-Dong Zhang, Jia-Wang Yu, Jun-Yong Yan, Zhi-Bo Ni, Tao Wang, Ming-Jun Xia, Xing Lin, Feng Liu, Chao-Yuan Jin |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Optics express. 30(7) |
| ISSN: |
1094-4087 |
| Popis: |
Photonic crystal lasers with a high-Q factor and small mode volume are ideal light sources for on-chip nano-photonic integration. Due to the submicron size of their active region, it is usually difficult to achieve high output power and single-mode lasing at the same time. In this work, we demonstrate well-selected single-mode lasing in a line-defect photonic crystal cavity by coupling it to the high-Q modes of a short double-heterostructure photonic crystal cavity. One of the FP-like modes of the line-defect cavity can be selected to lase by thermo-optically tuning the high-Q mode of the short cavity into resonance. Six FP-like modes are successively tuned into lasing with side mode suppression ratios all exceeding 15 dB. Furthermore, we show a continuous wavelength tunability of about 10 nm from all the selected modes. The coupled cavity system provides a remarkable platform to explore the rich laser physics through the spatial modulation of vacuum electromagnetic field at submicron scale. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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