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	All-solid-stated laser controller design based on digital optical feedback (EI CONFERENCE)
	Liu L. ; Wang J.-L. ; Zhou C.-Y. ; Ge W.-Q.
	2005
会议名称	Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004
会议地点	Beijing, China
关键词	The new design about a CW digital all-solid-stated LD pumped Nd:YVO 4 controller is introduced. The stable output power of this digital laser controller which adopts Digital Signal Processor(TMS320C31) is approximately 20mW. The whole system is composed of constant- current source protection circuit pulse-width modulation circuit Si-photo-detector and amplified circuit and Digital Signal Processor control system etc. In terms of error deviation Based on nonlinear control curves of LD power output by Si-photo-detector the region control can be obtained by means of the PID control algorithm in the software platform that is error amendment and high stability laser power output can be achieved. And the precision of temperature control can reduce from 0.2C to 0.04C. By adopted integral separated mode PID control algorithm the LD output power instability ( %) down to 2%. By way of adopting the new digital design the work to protect the laser diode including the continuous adjustable output power with high accuracy and stability is easily obtained. The internal-external modulation control of the laser power based on digital optical feedback can be accomplished with stable power output. At last the bringing reasons of noise are analyzed and the solving methods are put forward in this paper.
页码	497-505
收录类别	EI
内容类型	会议论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/33417]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式 GB/T 7714	Liu L.,Wang J.-L.,Zhou C.-Y.,et al. All-solid-stated laser controller design based on digital optical feedback (EI CONFERENCE)[C]. 见:Lasers in Material Processing and Manufacturing II, November 10, 2004 - November 12, 2004. Beijing, China.

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