为了配合半导体波光器在偏振型光传感器中的应用, 采用高精度的恒温控制以及功率稳恒控制方法, 使用高稳定性的三极管2SC5551、高精度采集IDAQ6009、高稳定低振荡的MAX8521控制器、半导体制冷器等, 研制了一种偏振、波长与输出功率三个指标均稳定的半导体激光器。进行了理论分析和实验验证, 能够保证半导体激光器的输出波长控制精度在±0.01 nm, 驱动电流波动范围小于±0.05 mA, 输出偏振态稳定, 椭圆率为0.00(线性), 方向角波动范围小于0.1°。结果表明, 该激光器波长、功率、偏振态稳定, 保证了偏振型光传感器系统的稳定性和测量精度, 并且能够满足这类光传感器向智能化小型化的发展。

In order to match the application of polarization type light sensor, a high precision constant temperature control and power stability control method are adopted. And kind of polarization, wavelength, and three indicators is developed by using a high stability of 2 sc5551 triode, high precision acquisition IDAQ6009, high stability and low oscillation MAX8521 controller, semiconductor refrigerator, etc. Theoretical analysis and experimental verification are carried out to ensure that the output wavelength control accuracy of the semiconductor laser is within ±0.01 nm. The driving current fluctuation range is less than ±0.05 mA. The output polarization state is stable. The elliptic rate is 0.00(linear), and the direction angle fluctuation range is less than 0.1°. The results show that the wavelength, power and polarization state of the laser are stable, which guarantees the stability and measurement accuracy of the polarization type optical sensor system, and can meet the development of intelligent miniaturization of this kind of optical sensor.