Wide wavelength-tunable narrow-band thermal radiation from moiré patterns
Cheng Guo, Yu Guo, Beicheng Lou, Shanhui Fan
Abstract
Wavelength-tunable narrow-band thermal emitters are highly desired for various applications including multigas sensing. However, current thermal emitters suffer from either too broad bandwidth or too narrow tuning range. Here, based on the moiré effect, we provide a scheme of wavelength-tunable narrow-band thermal emitters with tunability over a wide wavelength range and operation at an arbitrary temperature. Thanks to the unique sensitivity of moiré patterns, our emitter achieves a tuning range to bandwidth ratio of 313, which is 68 times larger than the previous largest value ever reported.
Topics & Concepts
WavelengthMaterials scienceOptoelectronicsCommon emitterBandwidth (computing)ThermalOpticsRadiationPhysicsTelecommunicationsMeteorologyComputer scienceThermal Radiation and Cooling TechnologiesPhotonic and Optical DevicesOptical properties and cooling technologies in crystalline materials