Abstract
The electron beam lithography application to diffractive optical elements topology generation is examined. The formula for the estimation of exposure data volume for variable shaped electron beam lithography is presented as a function of diffractive optical element parameters and approximation accuracy. Special software was developed to prepare exposure data for diffractive optical elements fabrication. Diffractive optical elements with an artificial refractive index were manufactured with a feature size much less than the wavelength. Design and experimental results on photomasks fabrication are presented for an optical element focusing irradiation into a ring with ordered parameters. The photomask set was manufactured for reflecting optical element focusing high power CO<SUB>2</SUB> laser beam into two points with required parameters for laser welding.
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