
Proceedings Paper
Encoding arbitrary grey-level optical landscapes for trapping and manipulation using GPCFormat | Member Price | Non-Member Price |
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Paper Abstract
With the aid of phase-only spatial light modulators (SLM), generalized phase contrast (GPC) has been applied with great
success to the projection of binary light patterns through arbitrary-NA microscope objectives for real-time threedimensional
manipulation of microscopic particles. Here, we review the analysis of the GPC method with emphasis on
efficiently producing speckle-free two-dimensional grey-level light patterns. Numerical simulations are applied to
construct 8-bit grey-level optical potential landscapes with high fidelity and optical throughput via the GPC method.
Three types of patterns were constructed: geometric block patterns, multi-level optical trap arrays, and optical obstacle
arrays. Non-periodic patterns were accurately projected with an average of 80% diffraction efficiency. Periodic patterns
yielded even higher diffraction efficiencies, averaging 94%, by the utilization of large-aperture phase contrast filters.
Paper Details
Date Published: 5 September 2007
PDF: 9 pages
Proc. SPIE 6644, Optical Trapping and Optical Micromanipulation IV, 66440X (5 September 2007); doi: 10.1117/12.733956
Published in SPIE Proceedings Vol. 6644:
Optical Trapping and Optical Micromanipulation IV
Kishan Dholakia; Gabriel C. Spalding, Editor(s)
PDF: 9 pages
Proc. SPIE 6644, Optical Trapping and Optical Micromanipulation IV, 66440X (5 September 2007); doi: 10.1117/12.733956
Show Author Affiliations
Carlo Amadeo Alonzo, Technical Univ. of Denmark (Denmark)
Peter John Rodrigo, Technical Univ. of Denmark (Denmark)
Peter John Rodrigo, Technical Univ. of Denmark (Denmark)
Darwin Palima, Technical Univ. of Denmark (Denmark)
Jesper Glückstad, Technical Univ. of Denmark (Denmark)
Jesper Glückstad, Technical Univ. of Denmark (Denmark)
Published in SPIE Proceedings Vol. 6644:
Optical Trapping and Optical Micromanipulation IV
Kishan Dholakia; Gabriel C. Spalding, Editor(s)
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