Low power optical bistability from quantum dots in a nanobeam photonic crystal cavity
| Autor: | Mustafa Atabey Buyukkaya, Chang-Min Lee, Ahmad Mansoori, Ganesh Balakrishnan, Edo Waks |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Applied Physics Letters. 121:081104 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | We demonstrate a low power thermally induced optical bistability at telecom wavelengths and room temperature using a nanobeam photonic crystal cavity embedded with an ensemble of quantum dots. The nanobeam photonic crystal cavity is transfer-printed onto the edge of a carrier chip for thermal isolation of the cavity with an efficient optical coupling between the nanobeam waveguide and optical setup. Reflectivity measurements performed with a tunable laser reveal the thermo-optic nature of the nonlinearity. A bistability power threshold as low as 23 μW and an on/off response contrast of 6.02 dB are achieved from a cavity with a moderately low quality factor of 2830. Our device provides optical bistability at power levels an order of magnitude lower than previous quantum-dot-based devices. |
| Databáze: | OpenAIRE |
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