Ultrahigh quality factor in a metal-embedded semiconductor microdisk cavity.

Optics letters

PubMedID: 26670507

Kurosawa H, Kumano H, Suemune I. Ultrahigh quality factor in a metal-embedded semiconductor microdisk cavity. Opt Lett. 2015;40(24):5766-9.
We numerically and theoretically investigate electrodynamics of a metal-embedded semiconductor microdisk cavity. The electrodynamics of a cavity mode is discussed from the viewpoint of quantum mechanics, which clarifies the condition for high Q factor. Using numerical calculations, we optimize the cavity structure and show that the Q factor can be increased up to 1,700,000. Our study suggests that the metal-embedded cavity is a promising candidate for cavity quantum electrodynamics (QED) devices.