利用衍射光栅方程,分析可见光谱区标准光源的特征谱线的多级衍射特征,对标准光源的多级衍射进行计算机模拟计算,确定其多级衍射光强分布.测量汞灯特征谱线和He-Ne激光谱线的多级衍射谱分布,确定多级衍射谱的各级级次.对所得数据处理,做出拟合曲线,以多项式拟合方法求得拟合方程.以连续CO2激光器输出激光进行检测,同时以谱线分析仪监测,经过测量其波长,验证红外光栅单色仪定标准确.

Applying grating diffraction equation, multilevel diffractive characteristic of calibration lines of standard optical source was analyzed. Computer simulative calculation was completed on multilevel diffraction of standard optical source to solve intensity distribution of multilevel diffraction. Multilevel diffraction spectrum distribution of Hg lamp and He-Ne laser were measured, and the order of spectrum was defined. Fit curve was obtained by data processing and polynomial fitting. Infrared grating monochromator calibration was validated to be correct by measuring wavelength of a continuum wave CO2 laser and monitoring its wavelength to use a spectrum analysis instrument synchronously.