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A system and method for directly capturing particles with optical tweezers under high vacuum conditions

A high-vacuum, particle-based technology, applied in optics, optical components, nonlinear optics, etc., can solve the problems of energy dissipation in the center of mass movement of micro-nano particles, high probability of random collision, and low random collision.

Active Publication Date: 2022-07-12
ZHEJIANG UNIV
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Problems solved by technology

[0004] However, the existing technical means rely on the high probability of random collisions between gas molecules and micro-nano particles under low vacuum, so that the energy of the center-of-mass motion of the micro-nano particles can be dissipated and can be easily trapped by optical tweezers.
However, the probability of random collisions between gas molecules and micro-nano particles is very low under high vacuum, so the existing technology cannot achieve particle capture under high vacuum conditions.

Method used

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  • A system and method for directly capturing particles with optical tweezers under high vacuum conditions
  • A system and method for directly capturing particles with optical tweezers under high vacuum conditions

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Embodiment Construction

[0045] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

[0046] like figure 1 As shown, the system of the present invention includes a vacuum chamber VC, a micro-nano particle MS, a support device LP, an optical tweezers device and a detection feedback device;

[0047] The micro-nano particles MS are attached to the support device LP, the support device LP attached with the micro-nano particles MS is arranged in the vacuum chamber VC, and the optical tweezers device and the detection feedback device are connected in an optical path; the optical tweezers device generates capturing light, which is used for The micro-nano particles MS in the optical trap trapping area in the vacuum chamber VC are captured; the detection feedback device generates cooling light for cooling and consuming the mass center motion energy of the micro-nano particles MS, thereby stabilizing the micro-nano particles MS.

[0048] The optical t...

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Abstract

The invention discloses a system and method for directly capturing particles with optical tweezers under high vacuum conditions. It includes vacuum cavity, micro-nano particles, support device, optical tweezers device and detection feedback device; The feedback device is connected to the optical path; the optical tweezers device generates trapped light, which is used to capture the micro-nano particles in the optical trap trapping area in the vacuum chamber; Stable micro-nano particles. The method is used to realize the stable capture of micro-nano particles in the system. The invention utilizes the means of feedback cooling to directly capture micro-nano particles with optical tweezers under high vacuum conditions.

Description

technical field [0001] The invention relates to a system and method for capturing particles with optical tweezers under vacuum conditions in the technical field of precision measurement, in particular to a system and method for directly capturing particles with optical tweezers under high vacuum conditions. Background technique [0002] Vacuum optical tweezers is a technical means that can be applied to precision sensing and fundamental physics exploration. It can be used to measure very weak mechanical quantities, including force, acceleration, moment, etc. It can also be used to explore fundamental physical problems such as macroscopic quantum effects, non-Newtonian gravity, and Casimir forces. Since the suspended micro-nano particles in the vacuum optical tweezers system have no mechanical contact with the external environment, they can well isolate environmental noise, thereby achieving high measurement accuracy. [0003] In order to achieve the measurement accuracy re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28G02F1/11
CPCG02B27/283G02F1/11
Inventor 陈铭李楠陈杏藩胡慧珠刘承
Owner ZHEJIANG UNIV
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