Step Pulse Shaping Technique for Nd:YAG Laser Using a Multi-Switching Method

  • 발행 : 2004.04.01

초록

Throughout manufacturing processes, pulse shaping is required for material processing and it is regarded as an important (actor according to the specific characteristics of materials. Therefore, this study suggests a highly appropriate pulse shaping technique using a multi-switching method. This is a pulse superposition method in which one flash lamp can consecutively turn on by the double switching of the discharging system. It is possible to construct a variety of pulse shapes and pulse widths by the consecutive trigger of the silicon-controlled rectifiers (SCR) of a PIC (program integrated circuit) one-chip microprocessor. The use of this technique can provide a number of advantages to people who require suitable pulse shaping for particular applications such as welding, cutting, and drilling.

키워드

참고문헌

  1. J. E. Harry, 1974, Industial Laser and Their Application, McGraw-Hill, pp. 115-120
  2. Kayukov S. V. et al., 1990, The influence of Laser Radiation Pulse shape on the Spot weld Parameters, Proc. Int. Conf. New Advance in Welding and Allied Processes, May, Beijing, China, pp. 187-191
  3. W. Koechner, 1995, Solid-State Laser Engineering (New York, Heidelberg: Springer-Verlag), pp.318-340
  4. Yasutomo Fujimori, 1992, Laser Material Processing in Electric Industries, Proceeding of Lamp '92, Nagaoka, pp. 981-986
  5. Albright. C., 1996, Laser Welding, Machining and Materials Processing (IFS Publication), pp.8-12
  6. Hee-Je Kim, Eun-Soo Kim, Dong-Hoon Lee, 1998. The development of a high repetitive and high power Nd:YAG laser by using a zero-current switching resonant converter. Optics & Laser Technology, 30, pp.199-203.
  7. Hee-Je Kim, et al., 1998. Active two-pulse superposition technique of a pulsed Nd:YAG laser. Optical Engineering, Vol 37, Issue 6, pp.1780-1784