Laser energy automatic compensation method based on absorption spectrum
By monitoring the laser temperature and output energy in real time and calculating and adjusting the driving current, the problem of volume and weight increase in the existing laser output energy compensation method is solved, and a more accurate and reliable laser output energy stability is achieved.
CN120090043APending Publication Date: 2025-06-03ZHEJIANG DALI TECH
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Patent Information
- Application Number
- CN202311591548.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-27
- Publication Date
- 2025-06-03
AI Technical Summary
Technical Problem
The existing laser output energy compensation method requires the addition of external devices, resulting in an increase in the size and weight of the device, and the compensation effect is not accurate and reliable enough.
Method used
By measuring the drive current, pump energy and output energy of the laser, calculate the pump energy adjustment coefficient and drive current adjustment coefficient at different temperatures, adjust the drive current in real time to keep the output energy stable without additional refrigeration equipment and sensors.
Benefits of technology
The stable compensation of the laser output energy is achieved, avoiding the problem of volume and weight increase, and improving the accuracy and reliability of the compensation.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a laser energy automatic compensation method based on an absorption spectrum, belongs to the field of laser, and solves the problem that the size and weight of a device are increased due to tedious elements required by an existing method. The method comprises the following steps: measuring the driving current I0 of the LD, the pumping energy # imgabs0 # of the laser and the output energy E0 of the laser at normal temperature; calculating an adjustment coefficient SE (T) between pumping energy Ep (T) required by the output energy E0 of the laser and # imgabs 1 # at different temperatures of the LD; the adjustment coefficient SE (T) is obtained based on the light absorption spectrum of the laser crystal and the emission spectrum of the LD at different temperatures; based on the adjustment coefficient SE (T) of the pumping energy, the adjustment coefficient SI (T) and the adjustment formula of the driving current required by the LD at different temperatures are calculated, and the adjustment coefficient SI (T) and the adjustment formula are burnt into a control module of the laser; and the control module monitors the temperature of the LD in real time, and adjusts the driving current according to the adjustment coefficient SI (T) of the driving current, so that the output energy of the laser is E0. The method for compensating laser energy is simple and effective, and the size of an original device is maintained.
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