采用传输矩阵法研究了带缺陷层含负折射率介质的一维光子晶体的热辐射性质和控制.研究发现，此相干热辐射源在很窄的波长范围以及特定的方向上表现出非常尖锐的辐射峰，其品质因子比普通材料辐射源高.辐射峰对入射角度、偏振以及此结构中光子晶体的尺度因子都不敏感.辐射峰的大小，品质因子，位置可以通过调节缺陷层的厚度和折射率来调节，实现了对热辐射的有效控制.

The photonic crystals (PCs) with defect layer containing negativeindex materials coated over a SiC substrate are investigated by a transfer matrix method. The results show that this coherent thermal radiation source has very sharp emissivity peaks within a narrow wavelength band at a welldefined direction; the quality factor of the emissivity peak is high. This emissivity peak is not sensitive to the emission angle, polarization, and scaling factor of the photonic crystals in the structure. The value, quality factor, and position of the emissivity peak can be effectively controlled by tuning the thickness and refraction index of the defect layer.