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对常规傅里叶变换发光测量方法进行改进 ,引入双调制技术 ,在迈克耳孙干涉仪一级调制的基础上 ,引入更高频率调制锁相测量手段。通过这一测量方法的引入 ,并通过对调制频率和带通滤波器等测量参数的优化 ,基本消除了室温背景的黑体辐射在 4μm～ 5 μm以上区域对光致发光测量带来的严重干扰 ,在 10 μm长波红外波段得到了无室温背景黑体辐射影响的光致发光光谱 ,从而将光致发光测量推至 5 μm以上长波红外波段
The conventional Fourier transform luminescence measurement method is improved. The double modulation technique is introduced. Based on the primary modulation of Michelson interferometer, a higher frequency modulation phase-locked measurement method is introduced. Through the introduction of this measurement method and the optimization of measurement parameters such as modulation frequency and band-pass filter, the severe interference of photoluminescence measurement in the area of 4μm ~ 5 μm of blackbody radiation with room temperature background is basically eliminated. Photoluminescence spectra of blackbody radiation with no ambient background were obtained in the 10 μm longwave infrared band, pushing the photoluminescence measurement to the long-wave infrared band above 5 μm