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PubMed · 16912779

Self-aligned spatial filtering using laser optical tweezers.

Aaron L Birkbeck·Sanja Zlatanovic·Sadik C Esener
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Abstract

We present an optical spatial filtering device that has been integrated into a microfluidic system and whose motion and alignment is controlled using a laser optical tweezer. The lithographically patterned micro-optical spatial filter device filters out higher frequency additive noise components by automatically aligning itself in three dimensions to the focus of the laser beam. This self-alignment capability is achieved through the attachment of a refractive optical element directly over the circular aperture or pinhole of the spatial filter. A discussion of two different spatial filter designs is presented along with experimental results that demonstrate the effectiveness of the self-aligned micro-optic spatial filter.

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Equipment DesignEquipment Failure AnalysisFiltrationLasersLensesMicrofluidic Analytical TechniquesMicromanipulationOptics and PhotonicsJournal Article

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Aaron L Birkbeck, Sanja Zlatanovic, Sadik C Esener. 2006-09-01. Self-aligned spatial filtering using laser optical tweezers.. https://doi.org/10.1364/ao.45.006429

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