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Proceedings Paper

Developments in Laser-Beam Control With Holographic Diffraction Gratings
Author(s): Wilfrid B Veldkamp
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Paper Abstract

Binary holographic diffraction gratings were developed to shape laser-beam profiles and to generate multi-beam wavefronts for use in active infrared laser radar systems. The use of detector arrays in such systems requires amplitude and phase matching of multi-beam local oscillators to signal wavefronts in order to maximize the system's signal-to-noise ratio and resolution and to minimize the heat generated on the focal plane. In addition, a beam shaper in the transmit beam of the laser radar must shape the centro-symmetric Gaussian profile of the laser beam into a stretched profile that efficiently and uniformly illuminates the far-field footprint of the detector array. Potential applications include synthetic optical elements, high-energy laser-beam samplers, and uses in laser-beam annealing and optical communication.

Paper Details

Date Published: 19 November 1980
PDF: 9 pages
Proc. SPIE 0255, Practical Electro-Optical Instruments and Techniques, (19 November 1980); doi: 10.1117/12.959574
Show Author Affiliations
Wilfrid B Veldkamp, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0255:
Practical Electro-Optical Instruments and Techniques
Robert L. Kurtz, Editor(s)

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