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Holographic optical tweezers

An optical tweezers and holographic technology, applied in the field of holographic optical tweezers, can solve the problems of long optical path, large space occupied by the optical system, large volume of optical devices and adjustment frames, etc., and achieve the effect of reducing the volume

Inactive Publication Date: 2015-11-18
HEFEI TIANZAO INSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the holographic optical tweezers experimental device has problems such as long optical path, large volume of optical devices and adjustment frame, and large space occupied by the entire optical system.
In particular, the normal angle between the incident light and the spatial light modulator is required to be no more than 7° during use, which increases the difficulty of optical path layout and space occupation, thus affecting the promotion and application of this technology

Method used

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  • Holographic optical tweezers

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Experimental program
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Embodiment Construction

[0008] Combine below figure 1 , the present invention is described in further detail.

[0009] refer to figure 1 , a holographic optical tweezers device, TEM00 modal linearly polarized laser light is incident into the objective lens 60 after sequentially passing through the collimating beam expanding unit 10, the polarization state adjusting unit 20, the reflecting unit 30, the spatial light modulator 40, and the optical path compressing unit 50, The objective lens 60 converges the incident light to form a holographic optical tweezers in the sample cell 70 , and the light from the collimator beam expander unit 10 to the optical path compression unit 50 is arranged in a zigzag shape. By compactly arranging the units, the volume of the entire device is sufficiently reduced, making the device portable.

[0010] Further, the machine base 90 is composed of first, second and third through-chamber sections 91, 92, 93, the first and third through-chamber sections 91, 93 are parallel...

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Abstract

The present invention relates to the technical field of holographic optical tweezers, in particular to a holographic optical tweezers device, in which the TEM00 modal linearly polarized laser passes through a collimated beam expansion unit, a polarization state adjustment unit, a reflection unit, a spatial light modulator, and an optical path compression unit in sequence. The incident light is incident into the objective lens, and the objective lens gathers the incident light to form a holographic optical tweezers in the sample cell. After the light of the unit is arranged in a Z shape, the volume of the entire device can be effectively reduced. By adjusting the angle of the light incident on the spatial light modulator by the reflection unit, it is ensured that the normal angle between the incident light and the spatial light modulator is not greater than 7° .

Description

technical field [0001] The invention relates to the technical field of holographic optical tweezers, in particular to a holographic optical tweezers device. Background technique [0002] The holographic optical tweezers technology uses computer-designed diffractive optical elements to modulate the light incident on the spatial light modulator. It can simultaneously generate multiple optical traps and special functional optical traps, and has the ability to dynamically control samples in three dimensions. A revolution in classic optical tweezers technology. Holographic optical tweezers technology can be used for continuous fractionation of cells and particles and precise size screening. Special optical traps such as optical bottle arrays produced by holographic optical tweezers can be used for manipulating atoms and quantum computing. In addition, holographic optical tweezers are also used to drive particle rotation, measure the viscoelasticity of micro-nano scale objects, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B21/32G02B17/06G02B7/198G21K1/00
Inventor 李静伍小平李明嫦
Owner HEFEI TIANZAO INSTR