The synthetical application of the oscillator model and Kramers Kronig relation to the far infrared reflection spectrum of the long wavelength optical phonon in crystals was reported. By using the restriction condition between the oscillator model and the Kramers Kronig relation, a method was proposed to reckon the dielectric function from the incomplete far infrared reflection spectrum.
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陆卫 穆耀明.非完整红外反射光谱中介电函数推算方法的改进[J].红外与毫米波学报,1997,16(1):17~20]. Lu Wei Mu Yaoming Shen Xuechu. A METHOD IMPROVED TO RECKON THE DIELECTRIC FUNCTION FROM THE INCOMPLETE FAR INFRARED REFLECTION SPECTRUM[J]. J. Infrared Millim. Waves,1997,16(1):17~20.]