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WANG Jun-li, WANG Yun-peng, LI Da-yi, YU Qian-yang, TAN Hui-ming. All-soild-stated laser optics feedback controlled power supply[J]. LASER TECHNOLOGY, 2004, 28(3): 306-308.
Citation: WANG Jun-li, WANG Yun-peng, LI Da-yi, YU Qian-yang, TAN Hui-ming. All-soild-stated laser optics feedback controlled power supply[J]. LASER TECHNOLOGY, 2004, 28(3): 306-308.

All-soild-stated laser optics feedback controlled power supply

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  • Received Date: July 07, 2003
  • Revised Date: August 30, 2003
  • Published Date: May 24, 2004
  • The paper describes a CW,non-colling,digital all-solid-stated LD pumped Nd:YVO4 laser driver which adopts microprocessor control,stability power of optics feedback about 10mW output power.The system is composed of stable current source,protection circuit,pulse driver,Si photo-detector amplified and hign-speed microprocessor control system.Based on error variety of nonlinear control curves of LD output laser power by Si photo-detector,we take advantage of window node PID control algorithm to achieve high stability of laser power and reduce error amends.Combining appropriate hardware and software in our driver,we have achieved a variety of protection features including the ability to match and harmonize dynamic state and static state relation to gain LD output power instability to ±3% and internal orexternal pulse width modulation,relay soft and hardwer over-current protection and overvoltage shut-off.A continuously adjustable optical output power with high accuracy and stability has been obtained.
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    YAN P,HE B,WEI G H.Experiment research on a highly stable LD-pumped solid state laser[J].Chinese Joumal of Laser,2000,B89(6):481~487.

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