Ultra quiet fast laser switch capable of performing time-sharing power control and control method

A laser switch and power control technology, applied in optics, optical components, instruments, etc., can solve problems such as long relaxation time, discount of light intensity stability, heat dissipation and sound vibration are problems, and achieve long-term stability. low production cost

Active Publication Date: 2018-09-25
中科酷原科技(武汉)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another mechanical switching speed based on the thermal expansion effect of Ni-Cr wire is 300μs, but the relaxation time is too long (5s)
There are also mechanical switches based on 3D printing and DC motors. The fan speed is 1.22m / s, which is small and easy to manufacture. However, when the current is large and the speed is fast, its heat dissipation and sound vibration are still problems.
In addition to switching the laser, it is also necessary to control the stability of the laser light intensity in related experiments. Usually, a part of the light can be separated to detect and use AOM or EOM to achieve fast amplitude modulation of the beam to feedback control the light intensity. The method of indirectly stabilizing the intensity of the main light that needs to be used by splitting the light intensity is not ideal. Once the splitting ratio fluctuates due to changes in the external environment or the instability of the splitting device, the effect of stabilizing the light intensity will be greatly reduced.
Due to the problems of the mechanical switch mentioned above in the application of precision optical experiments, and the fact that no further real-time and effective detection or stabilization measures have been taken for the power of the laser, there is an urgent need for a device that can simultaneously solve the vibration problem in the current precision optics related experiments. , fast switching laser and optical switch for direct real-time monitoring and stabilizing laser light intensity

Method used

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  • Ultra quiet fast laser switch capable of performing time-sharing power control and control method
  • Ultra quiet fast laser switch capable of performing time-sharing power control and control method
  • Ultra quiet fast laser switch capable of performing time-sharing power control and control method

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Embodiment 1

[0032] Such as Figure 1~2 As shown, an ultra-quiet fast laser switch capable of time-sharing power control includes a DC motor 1 connected to a motor drive circuit 8, the DC motor 1 is fixed on a fixed frame 2, and the rotating shaft of the DC motor 1 The detector installation blade 4 is fixed, and the vertical baffle plate 12 is also arranged on the fixed frame 2. The vertical baffle plate 12 is provided with a light hole 6, and the rotation shaft of the DC motor 1 drives the detector installation blade 4 to rotate to the close position. The end of the laser stroke blocks the light hole 6 or the rotating shaft of the DC motor 1 rotates to drive the detector mounting blade 4 to rotate until the end of the laser stroke does not block the light hole 6, and the detector mounting blade 4 is fixed with the detector mounting blade 4 blocking The light hole 6 is a photodetector 3 for detecting the laser light passing through the light hole 6 .

[0033] A rubber gasket 5 is provided...

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PUM

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Abstract

The invention discloses an ultra quiet fast laser switch capable of performing time-sharing power control, which belongs to the technical field of photoelectric detection and control. The ultra quietfast laser switch capable of performing time-sharing power control comprises a DC motor, a fixing frame, a photoelectric detector, a detector mounting blade, rubber gaskets, a motor driving circuit, adigital control module, a laser intensity modulator and the like. The invention also discloses a control method for the ultra quiet fast laser switch capable of performing time-sharing power control.Quick laser switching can be realized, noise during a switching process is greatly reduced, and the laser intensity can be directly controlled.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection and control, and in particular relates to an ultra-quiet fast laser switch capable of time-sharing power control, and also relates to a control method of the super-quiet fast laser switch capable of time-sharing power control. Background technique [0002] Optical switches are widely used in experiments on atoms, molecules and photophysics. In physical experiments that require fast optical switches, two types of optical switches are generally used, one is based on electro-optic modulator (EOM) or acousto-optic modulator (AOM), and the other is mechanical switch. The advantage of the former is that it is fast (less than 1 μs) and easy to perform amplitude and frequency modulation, but the disadvantage is that it cannot be completely shut down, which may be fatal for some applications that are sensitive to leaked light. For example, in atomic interference experiments, leaked Raman l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/04
Inventor 汤彪黄攀威熊宗元王谨詹明生
Owner 中科酷原科技(武汉)有限公司
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