Chinese Journal of Quantum Electronics

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High efficiency programmable driving power supply of MOPA fiber laser

QIAN Juan1,2, DONG Weiwei1,JIA Xiande2   

  1. 1 AnHui Provincial Key Laboratory of Photonic Devices and Material, Anhui Institude of Optics and Fine Mechanics, Chinese Academy of Sciences,Hefei 230031, China; 2 University of Sciences and Technology of China,Hefei 230026, China
  • Published:2019-05-28 Online:2019-05-14

Abstract: In order to reduce the thermal dissipation of master oscillator power amplifier fiber laser drive system, improve its electro-optical efficiency and output energy of single pulse, a method of air-cooled constant temperature operation and intelligent program-controlled power supply is proposed. Based on the overall design goal of the drive power, detailed research is done from aspects of the refrigeration mode and selection of the refrigerating device. The temperature control of whole laser system is realized, and temperature error of the system is ±0.5 ℃. The relationship between amplifier pump output energy, input voltage and input current is investigated. The design requirement of constant current driving current of pump source is larger than 10 A, and the driving current of pulse is larger than 20 A. Experimental results have a significant reference value.

Key words: master oscillator power amplifier, driver power, high efficiency, programme control