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

Bessel beams

Luminescence

Beam shaping

LCDs

Molecules

Holograms

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