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Proceedings Article

Novel continuously shaped diffractive optical elements enable high efficiency beam shaping

[+] Author Affiliations
Yuri V. Miklyaev, Waleri Imgrunt, Tanja Bizjak, Lutz Aschke, Vitalij N. Lissotschenko

LIMO Lissotschenko Mikrooptik GmbH (Germany)

Vladimir S. Pavelyev

Image Processing Systems Institute (Russian Federation)

Denis G. Kachalov

Samara State Aerospace Univ. (Russian Federation)

Proc. SPIE 7640, Optical Microlithography XXIII, 764024 (March 03, 2010); doi:10.1117/12.846573
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From Conference Volume 7640

  • Optical Microlithography XXIII
  • Mircea V. Dusa; Will Conley
  • San Jose, California | February 21, 2010

abstract

LIMO's unique production technology is capable to manufacture free form surfaces on monolithic arrays larger than 250 mm with high precision and reproducibility. Different kinds of intensity distributions with best uniformities or customized profiles have been achieved by using LIMO's refractive optical elements. Recently LIMO pushed the limits of this lens production technology and was able to manufacture first diffractive optical elements (DOEs) based on continuous relief's profile. Beside for the illumination devices in lithography, DOEs find wide use in optical devices for other technological applications, such as optical communications, laser technologies and data processing. Classic lithographic technologies lead to quantized (step-like) profiles of diffractive micro-reliefs, which cause a decrease of DOE's diffractive efficiency. The newest development of LIMO's microlens fabrication technology allows us to make a step from free programmable microlens profiles to diffractive optical elements with high efficiency. Our first results of this approach are demonstrated in this paper. Diffractive beam splitters with continuous profile are fabricated and investigated. The results of profile measurements and intensity distribution of the diffractive beam splitters are given. The comparison between theoretical simulations and experimental results shows very good correlation.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Yuri V. Miklyaev ; Waleri Imgrunt ; Vladimir S. Pavelyev ; Denis G. Kachalov ; Tanja Bizjak, et al.
"Novel continuously shaped diffractive optical elements enable high efficiency beam shaping", Proc. SPIE 7640, Optical Microlithography XXIII, 764024 (March 03, 2010); doi:10.1117/12.846573; http://dx.doi.org/10.1117/12.846573


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