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Updated: Aug 8, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
Published on: January 28, 2019
Holographic femtosecond laser processing with multiplexed phase Fresnel lenses
Satoshi Hasegawa1, Yoshio Hayasaki, Nobuo Nishida
1Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima, Tokushima, Japan. hasegawa_s@opt.tokushima-u.ac.jp
Abstract:
Holographic femtosecond laser processing with multiplexed phase Fresnel lenses for high-speed parallel fabrication of microstructures is proposed. Use of a spatial light modulator (SLM) allows independent tunability of the diffraction peaks, three-dimensional parallelism, and arbitrary, variable features. The diffraction peaks are made uniform by changing the center phase and size of each phase Fresnel lens while taking account of the intensity distribution of the irradiated laser pulse and the spatial frequency response of the SLM.

