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Proceedings Paper

Optimization methods of hologram for holographic femtosecond laser processing
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Paper Abstract

In holographic femtosecond laser processing, a precise control of the diffraction peaks generated by a computergenerated hologram (CGH) displayed on a liquid crystal spatial light modulator is very important. We developed some design methods of the CGH. We developed a method that the CGH was optimized with based on an optical measurement of the diffraction peak intensities. Recently we also developed the second harmonic optimization based on the second harmonic generations induced by parallel femtosecond laser pulses. In our presentation, our recent progresses of the CGH optimization for holographic femtosecond laser processing are demonstrated.

Paper Details

Date Published: 21 February 2011
PDF: 7 pages
Proc. SPIE 7920, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVI, 79200Q (21 February 2011); doi: 10.1117/12.873487
Show Author Affiliations
Yoshio Hayasaki, Utsunomiya Univ. (Japan)
Satoshi Hasegawa, Utsunomiya Univ. (Japan)


Published in SPIE Proceedings Vol. 7920:
Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XVI
Bo Gu; Guido Hennig; Xianfan Xu; Hiroyuki Niino, Editor(s)

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