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Improved apparatus, system and method for applying optical gradient forces

A technology of optics, equipment, applied in the field of optical traps

Inactive Publication Date: 2007-12-05
ARRYX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although useful for its intended purpose, there are other sources of noise

Method used

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  • Improved apparatus, system and method for applying optical gradient forces
  • Improved apparatus, system and method for applying optical gradient forces
  • Improved apparatus, system and method for applying optical gradient forces

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Embodiment Construction

[0026] Specific terms will be used in the following description, and for convenience and reference, non-limiting concise definitions are given below:

[0027] A. "Beam" means a sub-beam of focused light or other energy source produced by directing a focused beam of light or other energy source, such as produced by a laser or parallel output from a light emitting diode, through a produced by the medium into two or more beamlets. An example of a beam is a high order laser beam diffracted from a grating.

[0028] B. "Phase distribution" means the phase of light or other energy source in the cross-section of a light beam.

[0029]C. "Phase patterning" means imparting a pattern of phase shifts to light, other focused beams of energy sources, or beams that alters its phase distribution, including but not limited to phase modulation, patterning, splitting, converging , divergence, shaping and other manipulation of focused beams or beams of light or other energy sources.

[0030] V...

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PUM

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Abstract

The present invention relates generally to generating and controlling optical trap arrays for manipulating particles. In particular, the invention relates to a dual function optical element able to both diffract laser light into beamlets and converge the beamlets (acting as a virtual lens for laser light), thereby eliminating the need for multiple physical lenses to transfer the diffracted laser beams to a focusing lens. The invention also relates to improved monitoring of optical traps by limiting the amount of noise reflected and scattered resulting from un-diffracted, laser light.

Description

[0001] Throughout this application, a number of publications are referenced. The disclosures of these publications in their entireties are incorporated by reference into this application in order to more fully describe the state of the art to which this invention pertains. technical field [0002] The present invention generally relates to optical traps. In particular, the present invention relates to devices, systems and methods for manipulating small particles by applying optical gradient forces to form multiple optical traps. Background technique [0003] Optical tweezers are an optical tool that uses the gradient force of a focused beam of light to manipulate particles with a higher dielectric constant than the surrounding medium. In order to minimize its energy, such particles will move towards the region with the strongest electric field. In terms of momentum, a focused beam of light generates radiation pressure, a tiny force generated by a particle through absorptio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/18G02B27/42B82B3/00B81C99/00G02B21/32G21K1/00
CPCG02B21/32
Inventor 戴维·格里尔沃德·洛佩斯埃里克·迪弗雷纳
Owner ARRYX INC