Volume 5 Issue 4
Aug.  2012
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ZHANG Xing-liang, GUO Li-hong, ZHANG Chuan-sheng, MENG Fan-jiang. Design of high-voltage pulse trigger system for CO2 laser[J]. Chinese Optics, 2012, 5(4): 416-422. doi: 10.3788/CO.20120504.0416
Citation: ZHANG Xing-liang, GUO Li-hong, ZHANG Chuan-sheng, MENG Fan-jiang. Design of high-voltage pulse trigger system for CO2 laser[J]. Chinese Optics, 2012, 5(4): 416-422. doi: 10.3788/CO.20120504.0416

Design of high-voltage pulse trigger system for CO2 laser

doi: 10.3788/CO.20120504.0416
  • Received Date: 16 Feb 2012
  • Rev Recd Date: 15 Apr 2012
  • Publish Date: 10 Aug 2012
  • To trigger the rotated spark switch in a CO2 laser stably and reliably, a high-voltage pulse trigger system is designed and a new method for driving and protecting Insulated Gate Bipolar Transistor(IGBT) is proposed. According to the trigger structure of rotated spark switch in the CO2 laser, a pulsed source which can output 100-500 Hz repetition-rate pulses and a single pulse is developed with the EPM3512 CPLD chip and the IGBT drive circuit with over-current, over-voltage protection and Electromagnetic Compatibility(EMC) design is proposed by a optocoupler HCPL-3120. Besides, the model of a high-voltage pulse transformer is simulated by PSPICE software. Finally, an experimental platform is buit to test the system performance online. Experimental results indicate that the high-voltage pulse trigger system can output high-repetition-rate pulses higher than 38 kV continuously and stably, which satisfies the requirements of the rotated spark switch in the CO2 laser for stability and reliability.

     

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