Experimental analysis of multiple-beam interference optical traps

Petr Jákl; Martin Šiler; Pavel Zemánek

doi:10.1117/12.2175933

5 December 2014 Experimental analysis of multiple-beam interference optical traps

Petr Jákl, Martin Šiler, Pavel Zemánek

Proceedings Volume 9441, 19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 944105 (2014) https://doi.org/10.1117/12.2175933
Event: XIX Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2014, Jelenia Gora, Poland

Abstract

Micro-particles with higher refractive index than the surrounding medium irradiated by a laser beam are pushed by optical forces towards places having the highest local optical intensity. These intensity maxima are usually created by focusing a laser beam using a microscope objective with high numerical aperture. A convenient alternative offers usage of light patterns created by an interference of collimated beams. This way tens or hundreds of optical traps are created in a spatially well-organized structure (also called as optical lattice) which is well-suited for studies of quasi-crystalline structures, targeted delivery of living cells or particle sorting and fractionation. Hereby, we investigate theoretically and experimentally properties of optical traps organized in hexagonal, rectangular and calleidoscopic structures created by interference of 3 up to 8 collimated laser beams.

Citation Download Citation

Petr Jákl, Martin Šiler, and Pavel Zemánek "Experimental analysis of multiple-beam interference optical traps", Proc. SPIE 9441, 19th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 944105 (5 December 2014); https://doi.org/10.1117/12.2175933

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