title: High-Q mid-infrared thermal emitters operating with high power-utilization efficiency.
abstract: We demonstrate a single-mode high-Q (Q>100) mid-infrared thermal emitter operating with high power-utilization efficiency. The emitter consists of a rod-type photonic crystal (PC) slab interacting with GaAs/AlGaAs multiple quantum wells (MQWs), a GaAs substrate frame supporting the PC slab, and electric wires for Joule heating of the device. We carefully design the structure of the PC slab and the supporting frame/wires to minimize unwanted thermal losses and realize narrowband thermal emission having a peak intensity, under a given electrical input power, that is an order of magnitude higher than that of a reference blackbody emitter due to the efficient increase of the device temperature.
authors.forename: Takuya
authors.initials: T
authors.lastname: Inoue
authors.forename: Menaka
authors.initials: M
authors.lastname: De Zoysa
authors.forename: Takashi
authors.initials: T
authors.lastname: Asano
authors.forename: Susumu
authors.initials: S
authors.lastname: Noda