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Automatic balance adjusting device for Terahertz wave detecting and adjusting method of automatic balance adjusting device

An automatic balancing and adjusting device technology, which is applied in the field of terahertz wave detection technology, can solve the problems that affect the experimental results, and the quarter-wave plate cannot achieve zero output of the balanced detector, so as to achieve the effect of reducing the impact

Inactive Publication Date: 2013-09-04
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the manual adjustment of the quarter-wave plate in the terahertz wave free electro-optic sampling device cannot achieve zero output of the balance detector and affect the experimental results, and provide an automatic balance for terahertz wave detection Adjusting device and method for adjusting the same

Method used

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  • Automatic balance adjusting device for Terahertz wave detecting and adjusting method of automatic balance adjusting device
  • Automatic balance adjusting device for Terahertz wave detecting and adjusting method of automatic balance adjusting device
  • Automatic balance adjusting device for Terahertz wave detecting and adjusting method of automatic balance adjusting device

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specific Embodiment approach 1

[0025] Specific implementation mode one: combine figure 2 To illustrate this embodiment, an automatic balance adjustment device for terahertz wave detection described in this embodiment includes a horizontal bevel gear 1, a self-centering lens holder 2, a vertical bevel gear 3, a filter circuit 4, an AD conversion circuit 5. Single-chip microcomputer circuit 6, motion controller 7 and stepping motor 8;

[0026] The horizontal bevel gear 1 is sleeved on the output end of the stepping motor 8, the vertical bevel gear 3 is a hollow bevel gear, and the vertical bevel gear 3 is fixed on the hollow shaft, the axis of the hollow shaft is in line with the stepping motor 8 The axes of the rotating shafts are perpendicular to each other, the horizontal bevel gear 1 is closely engaged with the vertical bevel gear 3, and one side of the vertical bevel gear 3 is fixedly connected with the self-centering lens holder 2;

[0027] The voltage signal output end of filter circuit 4 is connecte...

specific Embodiment approach 2

[0028] Specific implementation mode two: combination figure 2 This embodiment is described. The difference between this embodiment and the automatic balance adjustment device for terahertz wave detection described in the first embodiment is that the AD conversion circuit 5 is realized by a 12-bit high-precision chip.

specific Embodiment approach 3

[0029] Specific implementation mode three: combination figure 2 This embodiment is described. The difference between this embodiment and the automatic balance adjustment device for terahertz wave detection described in the first embodiment is that the single-chip microcomputer circuit 6 is realized by a 89C52 single-chip microcomputer.

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Abstract

An automatic balance adjusting device for Terahertz wave detecting and an adjusting method of the automatic balance adjusting device relate to a Terahertz wave detecting technology and aim to solve the problem that a zero output of a balance detector can not be realized by manually adjusting the quarter-wave plate in a Terahertz wave free electric-optic sampling device, thus affecting a test outcome. The automatic balance adjusting device for the Terahertz wave detecting comprises a self-centering lens frame, a horizontal bevel gear, a vertical bevel gear, a filtering circuit, an AD (analog digital) conversion circuit, a single-chip microcomputer, a motion controller and a step motor; signals outputted by the balance detector are sent to the single-chip microcomputer after passing a filter and the AD conversion circuit; the single-chip microcomputer controls the rotary direction and the angle of the step motor by enabling the motion controller to send a command code to the step motor to further control the quarter-wave plate to rotate. The automatic balance adjusting device for the Terahertz wave detecting can enable the balance detector output to be zero to reduce the test error and is suitable for the field of Terahertz wave detecting.

Description

technical field [0001] The invention relates to a terahertz wave detection technology. Background technique [0002] Terahertz (THz) waves refer to electromagnetic radiation with a frequency between 0.1THz and 10THz (wavelength between 30μm and 3mm). One end of the THz band falls into the far-infrared band, and the other end falls into the submillimeter wave band. Technology, the transition region between the red light state and the low light state, exhibits a series of special properties different from other electromagnetic radiation. Over the past two decades, terahertz wave generation and detection technology has achieved great development, and terahertz time-domain spectroscopy technology, terahertz imaging technology, optical pumping-terahertz detection spectroscopy and other technologies have emerged. Because crystal resonance in dielectrics, rotation and vibration states of macromolecules, and confinement states of nanomaterials are all in the terahertz band, these t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12G01N21/17
Inventor 王暄蒋强李志远
Owner HARBIN UNIV OF SCI & TECH