Minute particle optical manipulation method and apparatus
AssigneeNikon Corporation
InventorsKumiko Matsui, Hisashi Okugawa
Life of this patent
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Abstract
A minute particle optical manipulation method and a minute particle optical manipulation apparatus are capable of simply strengthening a trapping force in an optical-axis direction and expanding a range where the trapping for acts in the optical-axis direction without requiring an optical element such as a special prism etc., and obtaining the trapping force enough to trap the particle even when the minute particle exists deep within a medium while keeping the trapping force when the minute particle is in a shallow position within the medium.
Claims11
A minute particle optical manipulation method comprising:
- a step of irradiating a minute particle in a medium with a cone-shaped converged beam having a plus spherical aberration;
- and
- a step of trapping and manipulating the minute particle.
A minute particle optical manipulation apparatus comprising:
- a converging optical system for generating a cone-shaped converged beam having a plus spherical aberration,
- wherein a minute particle in a medium is irradiated with the cone-shaped converged beam having the plus spherical aberration that emerges from said converging optical system, and is trapped and manipulated.
A minute particle optical manipulation apparatus for irradiating a minute particle in a medium with a converged beam generated through a converging optical system on the basis of a trapping light so as to optically trap and manipulate said minute particle, comprising:
- an observation system for observing said minute particle through said converging optical system on the basis of an observation light having a substantially different wavelength from that of said trapping light,
- wherein an axial chromatic aberration Δ of said observation light which uses said trapping light as a basis in said converging optical system has a predetermined negative value.
Dependencies are inferred from the claim text.