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High-Q nanocavities in semiconductor-based three-dimensional photonic crystals

High-Q nanocavities in semiconductor-based three-dimensional photonic crystals

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The high-quality factors (Q-factors) of nanocavities in three-dimensional photonic crystals were experimentally demonstrated by increasing the in-plane area of the structure. Entire structures made of GaAs were fabricated by a micro-manipulation technique, and the nanocavities contained InAs self-assembled quantum dots that emitted near-infrared light. The obtained Q-factor was improved to 93,000, which is 2.4 times larger than that in a previous report of a three-dimensional photonic crystal nanocavity. Due to this large Q-factor, a lasing oscillation from this cavity mode was successfully observed.

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      • 10. Tajiri, T., Takahashi, S., Ota, Y., et al: ‘Guiding of laser light from a nanocavity in a three-dimensional photonic crystal’. 2017 Conf. on Lasers and Electro-Optics (CLEO), 2017, pp. 12.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.4542
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