Formation of a doughnut laser beam for super-resolving microscopy using a phase spatial light modulator

Takeshi Watanabe; Yasuhiro Igasaki; Norihiro Fukuchi; Makoto Sakai; Shun-ichi Ishiuchi; Masaaki Fujii; Takashige Omatsu; Kimihisa Yamamoto; Yoshinori Iketaki

doi:10.1117/1.1690767

1 May 2004 Formation of a doughnut laser beam for super-resolving microscopy using a phase spatial light modulator

Takeshi Watanabe, Yasuhiro Igasaki, Norihiro Fukuchi, Makoto Sakai, Shun-ichi Ishiuchi, Masaaki Fujii, Takashige Omatsu, Kimihisa Yamamoto, Yoshinori Iketaki

Author Affiliations +

Optical Engineering, Vol. 43, Issue 5, (May 2004). https://doi.org/10.1117/1.1690767

Abstract

The formation of a doughnut-shaped laser beam is presented. To generate the beam, we use an optically addressed parallel-aligned nematic liquid-crystal phase spatial light modulator (PAL-SLM), and observe the shape of the focused beam. By using a compensating technique for wave aberration, the beam has a symmetric doughnut shape with a hole size of 1 μmφ on the focal plane. The experimental result shows that the generated beam can be expected to be applicable to super-resolving microscopy based on the fluorescence depletion process.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Takeshi Watanabe, Yasuhiro Igasaki, Norihiro Fukuchi, Makoto Sakai, Shun-ichi Ishiuchi, Masaaki Fujii, Takashige Omatsu, Kimihisa Yamamoto, and Yoshinori Iketaki "Formation of a doughnut laser beam for super-resolving microscopy using a phase spatial light modulator," Optical Engineering 43(5), (1 May 2004). https://doi.org/10.1117/1.1690767

Published: 1 May 2004

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