12 October 1994 Holographic optical element converting the Gaussian laser beam into a more uniform one
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Proceedings Volume 2169, Nonconventional Optical Imaging Elements; (1994); doi: 10.1117/12.190213
Event: International Colloquium on Nonconventional Optical Imaging Elements, 1993, Rydzyna-Rokosowo, Poland
Abstract
A surface relief holographic grating is designed for the transformation of a Gaussian laser beam into a beam with a flattened plateau in its central part. The depth of grating grooves varies over the surface in order to achieve a distribution of diffraction efficiency complementary to the intensity profile of the laser beam to be transformed. The appropriate efficiency distribution over the grating can be obtained by a technological process during the exposure and development. Experiments have proved that produced grating samples can sufficiently flatten the Gaussian beam, and that the degree of the beam flattening can be easily controlled.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ivo Koudela, Miroslav Miler, Miroslav Skalsky, "Holographic optical element converting the Gaussian laser beam into a more uniform one", Proc. SPIE 2169, Nonconventional Optical Imaging Elements, (12 October 1994); doi: 10.1117/12.190213; https://doi.org/10.1117/12.190213
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KEYWORDS
Diffraction gratings

Diffraction

Gaussian beams

Holographic optical elements

Modulation

Optical design

Palladium

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