The design and implementation of high accuracy digital control semiconductor laser constant current source

Tonggang Zhao; Chuanlong Huang

doi:10.1117/12.2035368

19 December 2013 The design and implementation of high accuracy digital control semiconductor laser constant current source

Tonggang Zhao, Chuanlong Huang

Author Affiliations +

Proceedings Volume 9046, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 90460P (2013) https://doi.org/10.1117/12.2035368
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

In order to achieve the goal of constant output light power, the design of high accuracy digital control semiconductor laser constant current source is very important. Semiconductor laser is can be divided into load floating and load grounding two types based on the package. In this paper, a small power grounding type digital control semiconductor laser constant current source is realized by using ARM processor. By using this method, the semiconductor laser can be provided within the range of 0mA-500mA constant current. At same time, some functions such as slow start, temperature control, overcurrent protection are realized. In actual experiment test result show, the design method is stable, reliable and high accuracy.

Citation Download Citation

Tonggang Zhao and Chuanlong Huang "The design and implementation of high accuracy digital control semiconductor laser constant current source", Proc. SPIE 9046, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 90460P (19 December 2013); https://doi.org/10.1117/12.2035368

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