CAJ | 학술논문

基于有限一维光子晶体表面电磁波理论,以探测CO_2为例,设计了一个中心波长为4.23μm,发射率大于99%,发射谱线半高宽FWHM=49.9nm的窄带准相干红外发射光源.采用传输矩阵方法对这种光源进行了理论分析,并用时域有限差分(FDTD)方法对器件垂直入射时的反射谱和稳态电场分布进行了数值仿真,仿真光谱特征和理论计算得到的结果吻合,证明了这种窄带红外发射光源的可行性.
기우유한일유광자정체표면전자파이론,이탐측CO_2위례,설계료일개중심파장위4.23μm,발사솔대우99%,발사보선반고관FWHM=49.9nm적착대준상간홍외발사광원.채용전수구진방법대저충광원진행료이론분석,병용시역유한차분(FDTD)방법대기건수직입사시적반사보화은태전장분포진행료수치방진,방진광보특정화이론계산득도적결과문합,증명료저충착대홍외발사광원적가행성.
Based on one-dimensional photonic crystals, a narrowband quasi-coherent infrared thermal emitter with the central wavelength corresponding to the infrared absorption peak of CO_2 was designed. Its central wavelength, emissivity and full width at half maximum (FWHM) are 4.23 μm, >99% and 49.9nm, respectively. Transfer matrix method (TMM) and finite difference time domain method (FDTD) were used to analyze and simulate this infrared thermal emitter respectively. The results obtained by theory calculations and simulated spectral property are consistent. So the feasibility of this kind of narrowband thermal emitter is verified.