Zhichang XIA, Yongai YU, Jianhua SHANG. Output Power and Temperature Stability of Semiconductor Laser Based on STM32[J]. Acta Photonica Sinica, 2023, 52(8): 0814002
- Acta Photonica Sinica
- Vol. 52, Issue 8, 0814002 (2023)
Fig. 1. Effect of temperature on wavelength of semiconductor laser
Fig. 2. Structure of drive and control system for semiconductor lasers
Fig. 3. Principle of laser drive circuit
Fig. 4. Constant current source circuit
Fig. 5. Schematic of analog switch
Fig. 6. Main program flow
Fig. 7. Semiconductor laser drive control system
Fig. 8. Stability of driving current in semiconductor lasers
Fig. 9. Linearity of driving current of semiconductor laser
Fig. 10. Adjustment time of laser operating temperature
Fig. 11. Operating temperature of laser
Fig. 12. Stability of output power of semiconductor lasers
Fig. 13. Output power of semiconductor laser at 5 ℃，20 ℃ and 35 ℃
Fig. 14. Output power under the constant voltage control mode and the constant power control mode
Fig. 15. Center wavelength under constant voltage control mode and constant power control mode
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