Controlling the shape of Talbot bands' visibility.

Controlling the shape of Talbot bands' visibility.
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控制塔尔博特带可见性的形状。

DOI:
10.1364/oe.16.009654
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发表时间:
2008
期刊:
影响因子:
3.8
通讯作者:
A. Podoleanu
A. Podoleanu
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. Woods;A. Podoleanu

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提出了一个理论模型,预测傅里叶域光谱干涉术中的灵敏度变化与光程差(OPD)使用的配置,产生塔尔博特带。这样的配置要求两个干涉光束使用询问光谱仪中的衍射光栅的不同部分。到目前为止,在塔尔博特带实验中,两个光束内的功率分布被认为是均匀的。在这份报告中,我们表明,通过操纵两个干涉光束内的功率分布,OPD值,其中最大的灵敏度是可以方便地调谐,以及灵敏度的变化与OPD。此外,在两个光束之间产生间隙导致最小可检测OPD值的调整,而光束的宽度确定最大可检测OPD值。这些功能不能解释的理论模型发表至今只涉及光谱仪分辨率元素,而这些功能是正确的预测模型在这里。
We present a theoretical model to predict the sensitivity variation versus optical path difference (OPD) in Fourier domain spectral interferometry using configurations which produce Talbot bands. Such configurations require that the two interfering beams use different parts of the diffraction grating in the interrogating spectrometer. So far, the power distribution within the two beams in a Talbot bands experiment was considered uniform. In this report, we show that by manipulating the power distribution within the two interfering beams, the OPD value where maximum sensitivity is achieved can be conveniently tuned, as well as the sensitivity variation with OPD. Furthermore, creating a gap between the two beams leads to adjustment of the minimum detectable OPD value, while the width of the beams determine the maximum detectable OPD value. These features cannot be explained by theoretical models published so far involving spectrometer resolution elements only, while such features are correctly predicted by the model presented here.
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影响因子: 3.6
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