Ebook: Electromagnetic Theory of Gratings
- Tags: Optics and Electrodynamics
- Series: Topics in Current Physics 22
- Year: 1980
- Publisher: Springer-Verlag Berlin Heidelberg
- Edition: 1
- Language: English
- pdf
When I was a student, in the early fifties, the properties of gratings were generally explained according to the scalar theory of optics. The grating formula (which pre dicts the diffraction angles for a given angle of incidence) was established, exper imentally verified, and intensively used as a source for textbook problems. Indeed those grating properties, we can call optical properties, were taught'in a satisfac tory manner and the students were able to clearly understand the diffraction and dispersion of light by gratings. On the other hand, little was said about the "energy properties", i. e. , about the prediction of efficiencies. Of course, the existence of the blaze effect was pointed out, but very frequently nothing else was taught about the efficiency curves. At most a good student had to know that, for an eche lette grating, the efficiency in a given order can approach unity insofar as the diffracted wave vector can be deduced from the incident one by a specular reflexion on the large facet. Actually this rule of thumb was generally sufficient to make good use of the optical gratings available about thirty years ago. Thanks to the spectacular improvements in grating manufacture after the end of the second world war, it became possible to obtain very good gratings with more and more lines per mm. Nowadays, in gratings used in the visible region, a spacing small er than half a micron is common.
Content:
Front Matter....Pages I-XV
A Tutorial Introduction....Pages 1-52
Some Mathematical Aspects of the Grating Theory....Pages 53-62
Integral Methods....Pages 63-100
Differential Methods....Pages 101-121
The Homogeneous Problem....Pages 123-157
Experimental Verifications and Applications of the Theory....Pages 159-225
Theory of Crossed Gratings....Pages 227-276
Back Matter....Pages 277-286
Content:
Front Matter....Pages I-XV
A Tutorial Introduction....Pages 1-52
Some Mathematical Aspects of the Grating Theory....Pages 53-62
Integral Methods....Pages 63-100
Differential Methods....Pages 101-121
The Homogeneous Problem....Pages 123-157
Experimental Verifications and Applications of the Theory....Pages 159-225
Theory of Crossed Gratings....Pages 227-276
Back Matter....Pages 277-286
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