A Method of Stabilizing Semiconductor Laser Power
For the influence of the temperature and current, the power of semiconductor laser fluctuates constantly. So this paper comes up with a new method to solve this problem. The design of peripheral circuit contains two parts: temperature control and power control. The system of temperature control uses special laser temperature control chip, which realizes the accuracy of 0.01°C. The system of power control adopts hardware PI control, over-current protection, over-voltage protection, and temperature protection. Temperature compensation is added to the circuit, which realizes the accuracy of 0.01mW.
Q. P. Yuan et al., "A Method of Stabilizing Semiconductor Laser Power", Applied Mechanics and Materials, Vols. 130-134, pp. 1370-1373, 2012