Tao Yang, Wusen Li, Wenjian Chen. Design of new-style driving and temperature control circuit for low power diode laser[J]. Infrared and Laser Engineering, 2022, 51(2): 20210764
- Infrared and Laser Engineering
- Vol. 51, Issue 2, 20210764 (2022)
Fig. 1. Block diagram of overall design
Fig. 2. Constant current linear slow-start circuit
Fig. 3. Simulation results of slow-start circuit
Fig. 4. Constant current drive circuit
Fig. 5. Current limiting and electrostatic protection circuit
Fig. 6. Schematic diagram of temperature control circuit
Fig. 7. Physical drawing of temperature control circuit
Fig. 8. Flow chart of software control
Fig. 9. RTL diagram of incremental PID control module
Fig. 10. Experimental platform of diode laser drive control system
Fig. 11. Fitting curve of control voltage and operating current
Fig. 12. Current stability of LD
Fig. 13. Stability of the output optical power
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Table 1. Linearity measurement data of control voltage and operating current
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