Diffraction by ruled gratings with variable spacing: fundamental method of intensity calculation

Chatterjee S.; Vani V. C.; Haghighi Rezvan R.; Banyal Ravinder K.

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Diffraction by ruled gratings with variable spacing: fundamental method of intensity calculation

机译：具有可变间距的统治光栅衍射：强度计算的基本方法

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A regular diffraction grating produces intensity patterns that combine waves coming through equispaced slits, so that the waves emerging from any two neighboring slits have identical phase differences. In this paper, we calculate the degradation in the intensity pattern when the grating has irregular spacing. The model of randomness considers the grating spacing and openings as being created by a "random walk." The resolving power of the grating is evaluated in relation to the D lines of sodium. It is shown that as the number of rulings increases, the uniformity of their spacing becomes more important in precision spectroscopic measurements, such as in astrophysical spectroscopy. (C) 2019 Optical Society of America

机译：常规衍射光栅产生强度图案，该强度图案结合通过等间狭缝的波浪，使得从任何两个相邻狭缝出现的波具有相同的相位差。在本文中，当光栅具有不规则间距时，我们计算强度图案中的劣化。随机性模型认为光栅间距和开口是由“随机漫步”创建的。对光栅的分辨率与D线进行评估。结果表明，随着裁缝的数量增加，它们间距的均匀性在精密光谱测量中变得更重要，例如在天体物理学光谱中。（c）2019年光学学会

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来源
《Applied optics》 |2019年第31期|共10页
作者
Chatterjee S.; Vani V. C.; Haghighi Rezvan R.; Banyal Ravinder K.;
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Ongil 4 Rajiv Gandhi Salai Chennai 600113 Tamil Nadu India;

Indian Inst Sci Dept Instrumentat &

Appl Phys Bangalore 560012 Karnataka India;

Shiraz Univ Med Sci Med Imaging Res Ctr Shiraz 7134845794 Iran;

Indian Inst Astrophys Bangalore 560034 Karnataka India;

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Diffraction by ruled gratings with variable spacing: fundamental method of intensity calculation

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