Developments in Laser-Beam Control With Holographic Diffraction Gratings

Wilfrid B Veldkamp

doi:10.1117/12.959574

19 November 1980 Developments in Laser-Beam Control With Holographic Diffraction Gratings

Wilfrid B Veldkamp

Proceedings Volume 0255, Practical Electro-Optical Instruments and Techniques; (1980) https://doi.org/10.1117/12.959574
Event: 1980 Huntsville Technical Symposium, 1980, Huntsville, United States

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.

Citation Download Citation

Wilfrid B Veldkamp "Developments in Laser-Beam Control With Holographic Diffraction Gratings", Proc. SPIE 0255, Practical Electro-Optical Instruments and Techniques, (19 November 1980); https://doi.org/10.1117/12.959574

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