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OPTICAL TRAP USING A FOCUSED HOLLOW-BEAM FOR TRAPPING AND HOLDING BOTH ABSORBING AND NON-ABSORBING AIRBORNE PARTICLES
OPTICAL TRAP USING A FOCUSED HOLLOW-BEAM FOR TRAPPING AND HOLDING BOTH ABSORBING AND NON-ABSORBING AIRBORNE PARTICLES
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机译:使用聚焦空心光束的光学陷阱,用于捕获和保持吸收性和非吸收性空气粒子
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摘要
Embodiments of the present invention are directed to systems and methods for trapping and holding airborne particles. In the various embodiments, an optical trap is provided which uses a focused hollow-beam for trapping and holding both absorbing and non-absorbing airborne particles. The optical trap comprises: a trapping region where a particle can be present to be trapped; a light source for generating a coherent beam of light; optics for forming a hollow beam having a ring geometry from the coherent beam of light; and a focusing element for focusing the hollow beam to a point in the trapping region. In this arrangement, the particle is trapped at or near the focal point of the focused hollow beam.
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