Paper
26 April 1989 Holographic Generation Of Gratings With Periodicities Below 150 nm With An Excimer Laser
T. Ahlhorn, H. Pohlmann, J. P. Kotthaus
Author Affiliations +
Proceedings Volume 1023, Excimer Lasers and Applications; (1989) https://doi.org/10.1117/12.950154
Event: 1988 International Congress on Optical Science and Engineering, 1988, Hamburg, Germany
Abstract
Holographic generation of gratings with periodicities down to 140nm in thin polymethyl methacrylate (PMMA) layers on Si-substrates using a narrow band KrF-excimer laser (λ=248 nm) is reported. At low single pulse energy densities (<3OmJ/cm2) the gratings are prepared by conventional photolithography. At higher single pulse energy densities (>70mJ/cm2) we directly write gratings in the PMMA by photoetching (ablation).
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. Ahlhorn, H. Pohlmann, and J. P. Kotthaus "Holographic Generation Of Gratings With Periodicities Below 150 nm With An Excimer Laser", Proc. SPIE 1023, Excimer Lasers and Applications, (26 April 1989); https://doi.org/10.1117/12.950154
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Cited by 1 scholarly publication and 1 patent.
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KEYWORDS
Modulation

Polymethylmethacrylate

Excimer lasers

Holography

Diffraction gratings

Silicon

Interfaces

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