A thermal emitter with selective wavelength: Based on the coupling between photonic crystals and surface plasmon polaritons

作者：Fu Han Kuei^*; Jiang Yu Wei; Tsai Ming Wei; Lee Si Chen; Chen Yang Fang

来源：Journal of Applied Physics, 2009, 105(3): 033505.

DOI：10.1063/1.3074293

• dielectric thin films
• heat radiation
• metallic thin films
• photonic band gap
• photonic crystals
• polaritons
• silicon
• silicon compounds
• silver
• surface plasmons
• thermo-optical effects

A thermal emitter with selective wavelength has been demonstrated in which the dielectric layers formed one-dimensional photonic crystals are sandwiched between two Ag films. The top Ag film is perforated periodically with hexagonal hole array. The selected thermal radiation of the photonic crystals resonates between two metal films and surface plasmon polaritons are generated on the top Ag and converted to light radiation. It is found that when leakage modes adjacent to the optic band gap of photonic crystals meet the resonant modes of surface plasmom polaritons, an enhanced thermal emission with maximum intensity can be obtained. The hybrid photonic and plasmonic thermal emitters are selective, which should be very useful for the creation of high power infrared light sources.

• 出版日期2009-2-1
• 单位中国科学院电工研究所