Design of laser diode stable output system

Bo Liu; Rui-ming Cao

doi:10.1117/12.756370

7 January 2008 Design of laser diode stable output system

Bo Liu, Rui-ming Cao

Proceedings Volume 6824, Semiconductor Lasers and Applications III; 68240M (2008) https://doi.org/10.1117/12.756370
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

High-stability output's system of laser diode is introduced in this paper. The system which is based on the MCU of MSP430 has been designed light power feedback loop and coller of TEC. It includes stable current, protecting circuit, light power feedback loop, temperature controlling, power display and so on. It is also able to control and show the power at the real time. The power could be set by botton too. The software of slow start up, slow close and the protecting relay are adopted by MCU. DRV592 is introduced as PWM driver to control the current of TEC. The duty cycle is generate by MCU. In order to control temperature, it is changed to influence the current of TEC. The power that is sampled by photodiode which is integrated in the laser diode is controlled by the micro-processing. The laser is monitored by voltage control circuit and current control circuit at the real time.

Citation Download Citation

Bo Liu and Rui-ming Cao "Design of laser diode stable output system", Proc. SPIE 6824, Semiconductor Lasers and Applications III, 68240M (7 January 2008); https://doi.org/10.1117/12.756370

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