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Liquid optical phase modulation device based on dielectrophoresis effect and use method thereof

A dielectrophoresis and liquid technology, applied in the field of liquid optical phase modulation devices, can solve the problems of low precision, complex structure of optical phase modulation devices, high cost, etc., and achieve easy production, simple adjustment measurement and calculation process, and low cost Effect

Inactive Publication Date: 2020-04-17
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention provides a liquid optical phase modulation device based on the dielectrophoretic effect and its use method to solve the problems of complex structure, high cost and low precision of the optical phase modulation device in the prior art

Method used

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  • Liquid optical phase modulation device based on dielectrophoresis effect and use method thereof
  • Liquid optical phase modulation device based on dielectrophoresis effect and use method thereof
  • Liquid optical phase modulation device based on dielectrophoresis effect and use method thereof

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Embodiment 1

[0036] A liquid optical phase modulation device based on the dielectrophoretic effect, comprising an inner cylindrical tube 5 and an outer cylindrical tube 3 arranged inside and outside, the bottom of the outer cylindrical tube 3 is connected to the bottom electrode 4, and the inner cylindrical tube 5 There is a gap between the bottom and the bottom electrode 4, and the tops of the inner cylindrical tube 5 and the outer cylindrical tube 3 are connected by the second upper cover sheet 2, and the top of the second upper cover sheet 2 is provided with a first upper cover Sheet 1, the middle of the bottom electrode 4 is provided with a first liquid 7, the top of the first liquid 7 meets the bottom surface of the inner cylindrical tube 5, and extends upward into the inner ring of the inner cylindrical tube 5, so The closed space formed between the bottom electrode 4, the outer cylindrical tube 3, the second upper cover sheet 2 and the first upper cover sheet 1 is filled with the sec...

Embodiment 2

[0045] A method for using a liquid optical phase modulation device based on the dielectrophoretic effect, comprising the following steps:

[0046] Step 1. Apply a voltage to the planar electrode, and the second liquid moves toward the center of the phase modulation device driven by the dielectric force, so that the contact angle and height of the first liquid increase, and the interface between the first liquid and the second liquid moves upward, as figure 2 As shown; when the voltage decreases, the dielectric force decreases, the contact angle and height of the first liquid decrease, and the interface between the first liquid and the second liquid moves downward;

[0047] Step 2, according to Calculate the phase difference change of the beam propagating from top to bottom, and finally complete the phase modulation,

[0048] Among them: ΔΦ represents the phase difference, Δ(ΔΦ) represents the amount of phase difference change, n 1 Indicates the first liquid refractive inde...

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Abstract

The invention discloses a liquid optical phase modulation device based on a dielectrophoresis effect. The device comprises an inner cylindrical pipe and an outer cylindrical pipe which are arranged inside and outside. The bottom of the outer cylindrical pipe is connected with a bottom electrode. A gap is reserved between the bottom of the inner cylindrical pipe and the bottom electrode. Two uppercover pieces are arranged at the tops of the inner and outer cylindrical pipes. First liquid is arranged in the middle of the bottom electrode, and the first liquid extends upwards into an inner ringof the inner cylindrical pipe. A closed space formed by the bottom electrode, the outer cylindrical pipe and the two upper cover pieces is filled with second liquid, and the second liquid wraps the first liquid from the upper portion. A floating piece is arranged between the two pieces of liquid located in the inner ring of the inner cylindrical pipe. A voltage is applied to the planar electrode,and the height of the working liquid is changed under the action of dielectric force, so that the interface of the working liquid moves up and down, the phase difference of propagated beams is changed, and the purpose of phase modulation is achieved. The device can be widely applied to the technical fields of photoelectric information integration devices, microfluidic optical analysis and self-adaptive optics.

Description

technical field [0001] The invention belongs to the technical fields of photoelectric information integration devices, microfluidic optical analysis and self-adaptive optics, and in particular relates to a liquid optical phase modulation device based on dielectrophoretic effect and its application method. Background technique [0002] In the 1950s, scientists from the United States and the Soviet Union proposed the concepts and technical methods of wavefront sensing and correction, which gave birth to adaptive optics systems. In 1992, the "Lincoln Laboratory Journal" published the research progress of adaptive optics technology in the United States for nearly half a century, including important scientific research achievements such as atmospheric turbulence theory, laser atmospheric transmission, and high-resolution imaging. Development has laid a solid foundation. [0003] An adaptive optics system consists of 3 main components: a wavefront sensor, a computational control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/00G02B26/06
CPCG02B26/004G02B26/06
Inventor 梁忠诚丁文轩张雯洁赵瑞
Owner NANJING UNIV OF POSTS & TELECOMM
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