Kumar V N, Rao D N
Appl Opt. 1997 Jul 1;36(19):4535-9. doi: 10.1364/ao.36.004535.
We determined the instrument function or the response function of a grating spectrometer with finite slit widths in conditions of partial coherent illumination, by using a spectral-interference technique with white light. A Michelson interferometer of variable path delay is used to produce the spectral-interference fringes of required spacing. By deconvolution of the spectral visibility data for various exit and entrance slit widths, we have determined the exact form and frequency width of the instrument function for the spectrometer as well as the working region of the spectrometer for the least distorted output spectrum.
我们利用白光光谱干涉技术，在部分相干照明条件下确定了具有有限狭缝宽度的光栅光谱仪的仪器函数或响应函数。使用可变光程延迟的迈克尔逊干涉仪来产生所需间距的光谱干涉条纹。通过对不同出射和入射狭缝宽度的光谱可见度数据进行去卷积，我们确定了光谱仪仪器函数的精确形式和频率宽度，以及光谱仪输出光谱失真最小的工作区域。
