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

Authors :: Takahashi, S.
Tajiri, T.
Watanabe, K.
Ota, Y.
Iwamoto, S.
Arakawa, Y.
Source :: Electronics Letters (Wiley-Blackwell). 3/8/2018, Vol. 54 Issue 5, p305-307. 2p.
Publication Year :: 2018
Abstract: The high-quality factors (Q-factors) of nanocavities in threedimensional 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. [ABSTRACT FROM AUTHOR]