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Dispersion compensation in moving-optical-wedge Fourier transform spectrometer

机译:移动光学楔形傅立叶变换光谱仪中的色散补偿

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摘要

In this paper we study the effect of material dispersion on the performance of a moving-optical-wedge Fourier transform spectrometer. The spectrum is thus evaluated numerically using a test spectrum source. The obtained numerical results show that the classical technique for numerical dispersion compensation, usually used with a Michelson interferometer, cannot be efficiently used with wedge interferometers as it is limited to the cases of weak dispersion. The error in this technique is thus evaluated in different cases and a new numerical technique is proposed to overcome this error. We also notice shrinkage in the interferogram spread in the spatial domain in contradiction with the normal dispersion effect in a Michelson interferometer.
机译:在本文中,我们研究了材料色散对移动光学楔形傅立叶变换光谱仪性能的影响。因此,使用测试光谱源对光谱进行数值评估。所获得的数值结果表明,通常用于迈克尔逊干涉仪的数值色散补偿经典技术不能有效地用于楔形干涉仪,因为它仅限于弱色散情况。因此,在不同情况下评估了该技术中的误差,并提出了一种新的数值技术来克服该误差。我们还注意到干涉图的收缩在空间域中的扩散与迈克尔逊干涉仪中的正常色散效应相矛盾。

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