IJAT Vol.14 No.4 pp. 546-551
doi: 10.20965/ijat.2020.p0546


Fabrication of a Two-Dimensional Diffraction Grating with Isolated Photoresist Pattern Structures

Hiraku Matsukuma, Masanori Matsunaga, Kai Zhang, Yuki Shimizu, and Wei Gao

Department of Finemechanics, Tohoku University
6-6-01 Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan

Corresponding author

January 30, 2020
March 27, 2020
July 5, 2020
mask-less interference lithography, non-orthogonal two-axis Lloyd’s mirror interferometer, two-dimensional diffraction grating, isolated photoresist pattern structures

This paper presents a fabrication method of a two-dimensional (2D) diffraction grating with isolated photoresist pattern structures in order to reduce fluctuation in the grating pitch due to the thermal expansion. At first, theoretical calculations for the fabrication of a 2D diffraction grating with isolated photoresist pattern structures are carried out to estimate the influences of exposure and development time on the pattern structures to be fabricated through the pattern exposure and development process. A diode laser-based compact non-orthogonal two-axis Lloyd’s mirror interferometer system designed in a size of 500 mm × 840 mm is then built on a breadboard for stable mask-less interference lithography. Basic performances of the newly developed compact interferometer system are evaluated through the fabrication of 2D diffraction gratings to demonstrate the feasibility of the theoretical calculations and the developed lithography system.

Cite this article as:
H. Matsukuma, M. Matsunaga, K. Zhang, Y. Shimizu, and W. Gao, “Fabrication of a Two-Dimensional Diffraction Grating with Isolated Photoresist Pattern Structures,” Int. J. Automation Technol., Vol.14 No.4, pp. 546-551, 2020.
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