MATEC Web Conf.
Volume 232, 20182018 2nd International Conference on Electronic Information Technology and Computer Engineering (EITCE 2018)
|Number of page(s)||5|
|Section||Circuit Simulation, Electric Modules and Displacement Sensor|
|Published online||19 November 2018|
Research on Power Stability Control of Semiconductor Laser
School of Mechanical and Electrical Engineering, Xi’an Polytechnic University, 710048 Xi'an, Shaanxi, China
2 School of Mechanical Engineering, Xi'anJiaotong University, 710049 Xi’an, Shaanxi, China
3 School of Aeronautics and Astronautics, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China
a Corresponding author: email@example.com
In order to guarantee the stable emission power and good working environment of semiconductor laser, a new hardware circuit is selected and designed to realize automatic optical power control, in which a negative feedback operation amplifier circuit is adopted to form the constant current source, and an optoelectronic feedback to realize closed loop control in this paper. And then, the corresponding steady control circuit is also designed, so that the stable power can be output. The experimental results show that the stability of laser power is better than 0.74% when the system works.
© The Authors, published by EDP Sciences, 2018
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