一种半导体激光器的波长自动检测和校准方法及装置
By integrating an automatic wavelength detection and calibration device for semiconductor lasers and using a peak-finding algorithm to adjust the driving current at a stable temperature, the problem of peak absorption wavelength shift in semiconductor lasers is solved, achieving efficient wavelength calibration and stable output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN GAOYUE TECH CO LTD
- Filing Date
- 2022-09-30
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the peak absorption wavelength of semiconductor lasers shifts by picometers over time, leading to a decrease in system responsivity or failure, which is particularly detrimental in high-precision applications.
An automatic wavelength detection and calibration method and device for semiconductor lasers is proposed. By integrating the laser body, laser driving unit, temperature detection unit, temperature control driving unit and control unit, the driving current is adjusted at a stable temperature using a peak finding algorithm. The peak absorption wavelength and the corresponding driving current value are recorded. The peak absorption wavelength is searched repeatedly at different temperatures to form a correspondence between driving current and temperature.
It improves the efficiency of wavelength calibration, ensures stable laser operation, eliminates external interference, and enhances the reliability of peak absorption wavelength identification and the accuracy of calibration.
Smart Images
Figure CN115579726B_ABST