Method for prolonging average fault-free working time of laser frequency stabilization system

A mean-failure-free, working-time technology, applied in lasers, laser parts, semiconductor lasers, etc., can solve problems affecting normal use, loss of lock of the automatic frequency stabilization system of the laser, etc., to improve stability and prolong mean trouble-free operation. time, the effect of improving locking ability

Active Publication Date: 2019-03-01
陕西聚力思创通信科技有限公司
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Problems solved by technology

However, in the existing laser automatic frequency stabilization system, due to the parameter drift of the physical system, the change of the system operating point, etc., the control voltage required for the laser automatic freq

Method used

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  • Method for prolonging average fault-free working time of laser frequency stabilization system
  • Method for prolonging average fault-free working time of laser frequency stabilization system
  • Method for prolonging average fault-free working time of laser frequency stabilization system

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Example Embodiment

[0035] Examples:

[0036] 1) The PI control unit in the laser automatic frequency stabilization system locks the wavelength of the laser on the physical reference;

[0037] 2) Use a 16-bit resolution AD converter to sample the lock voltage Vc output by the PI control unit in step 1);

[0038] 3) According to the AD converter output data of step 2), it is judged in real time whether the amount of deviation of the lock voltage Vc output by the PI control unit from Vm exceeds the threshold value Vh.

[0039] Here Vm is the center value of the output voltage range of the PI control unit, which is 2.5V in this embodiment system; Vh is the threshold value of the lock voltage deviating from Vm set to ensure the stable operation of the laser automatic frequency stabilization system. Set it to 1V in the embodiment system;

[0040] 4) If the amount by which the locking voltage Vc of step 3) deviates from Vm exceeds the threshold value Vh, the amount of change ΔI required for the drive current of...

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Abstract

The invention discloses a method for prolonging average fault-free working time of a laser frequency stabilization system. A locking voltage value output from a PI control unit in a laser automatic frequency stabilization system is sampled, and the locking voltage value is slowly returned to a central value of an action range by adjusting a current value output to a laser tube when that a voltageexceeds a threshold is monitored. By the method, the locking capability of the laser automatic frequency stabilization system can be improved, the locking stability is improved, so that the average fault-free working e of the laser frequency stabilization system is prolonged.

Description

technical field [0001] The invention belongs to the field of laser automatic frequency stabilization, and in particular relates to a method for prolonging the average trouble-free working time of a laser frequency stabilization system. Background technique [0002] Lasers play an important role in the systems of quantum optics, quantum information and cold atomic physics. In order to reduce the drift of lasers and make them work better, it is often necessary to lock the frequency of lasers on a certain reference standard to obtain Wavelength stabilized laser source. However, in the existing laser automatic frequency stabilization system, due to the parameter drift of the physical system, the change of the system operating point, etc., the control voltage required for the laser automatic frequency stabilization system to lock often exceeds the PI (proportional integral) control Therefore, it is necessary to propose a method to prolong the average trouble-free working time of...

Claims

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Application Information

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IPC IPC(8): H01S3/13H01S5/068
CPCH01S3/1305H01S5/06808
Inventor 李立波李建平
Owner 陕西聚力思创通信科技有限公司
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