Diffractive Optics: Design, Fabrication, and Test (Tutorial by Donald C. O'Shea, Thomas J. Suleski, Alan D. Kathman, Visit

By Donald C. O'Shea, Thomas J. Suleski, Alan D. Kathman, Visit Amazon's Dennis W. Prather Page, search results, Learn about Author Central, Dennis W. Prather,

This e-book offers the reader with the extensive variety of fabrics that have been mentioned in a chain of brief classes provided at Georgia Tech at the layout, fabrication, and checking out of diffractive optical components (DOEs). even though there will not be lengthy derivations or exact tools for particular engineering calculations, the reader may be universal and happy with simple computational strategies. this article isn't really a ''cookbook'' for generating DOEs, however it should still offer readers with enough info to evaluate no matter if this know-how would receive advantages their paintings, and to appreciate the necessities for utilizing the techniques and methods offered via the authors.

Contents

- Preface
- Introduction
- Scalar Diffraction Theory
- Electromagnetic research of Diffractive Optical Elements
- Diffractive Lens Design
- layout of Diffraction Gratings
- creating a DOE
- Photolithographic Fabrication of Diffractive Optical Elements
- Survey of Fabrication suggestions for Diffractive Optical Elements
- checking out Diffractive Optical Elements
- program of Diffractive Optics to Lens Design
- extra purposes of Diffractive Optical Elements
- Index

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Extra info for Diffractive Optics: Design, Fabrication, and Test (Tutorial Texts in Optical Engineering. SPIE Press Monograph)

Example text

By modifying this basic profile in a controlled manner, the remaining light can be either diffracted into higher orders or added to the lower orders, depending on the application. 9 Square-wave grating as a rough approximation to a blazed grating. For example, by using the binary mask approach schematically outlined in Sec. 7, the next step would be to etch additional steps that produce π/2 phase differences. This not only maintains the suppression of the zero order, but also eliminates the negative first-order diffraction and increases the percentage of light directed into the first order to 81%.

If these two boundary planes are parallel to each other, then the Green’s function, which governs the behavior of a propagating wave, is shift invariant. As a result, the system of electromagnetic propagation becomes linear and shift invariant. Consequently the propagation from plane to plane can be implemented through a spatial convolution, as described in Sec. 2. In accordance with standard signalprocessing techniques, such a system can be evaluated using the fast Fourier transform, which saves considerable computational time.

The argument is fairly simple: think of the grating as pairs of sections, the base section plus the π step. The amount of light transmitted by the step and the base is exactly the same, but they differ in phase by π in the direction of initial light propagation and therefore cancel each other out. ) It can be shown that this geometry also results in the suppression of all even orders. 5% of the light is diffracted into the first order . . 5% also is directed into the negative first order. 5% of the light into the first order (Fig.

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