대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

IGBT를 이용한 고반복 펄스형 $CO_2$ 레이저 개발에 관한 연구

A Study on the High Repetition Rate Pulsed $CO_2$ Laser Using IGBT

  • Chung, H.J. (Dept. of Electrical Eng., Pusan National Univ.) ;
  • Kim, D.W. (Dept. of Electrical Eng., Pusan National Univ.) ;
  • Lee, D.H. (Dept. of Electrical Eng., Pusan National Univ.) ;
  • Yoon, S.H. (Dept. of Electrical Eng., Pusan National Univ.) ;
  • Lee, Y.S. (Dept. of Electrical Eng., Pusan National Univ.) ;
  • Kim, H.J. (Dept. of Electrical Eng., Pusan National Univ.) ;
  • Cho, J.S. (Dept. of Electrical Eng., Pusan National Univ.)
  • 발행 : 1999.11.20
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초록

In this study, it is the purpose to develope a cheap and compact pulsed $CO_2$ laser with pulse repetition rate range of 1 kHz. We used a IGBT switched power supply as a power supply, which is cheap and simple comparing to others. PIC one-chip microprocessor was used for precise control of a laser power supply on the control part. And the laser cavity was fabricated as an axial and water cooled type. The laser performance characteristics as various parameters, such as pulse repetition rate gas pressure, and gas mixture rate have been investigated. The experiment was done under the condition of total pressure of $CO_2:N_2$:He = 1.3:10, 1:1.5:5 1:9:15 from 6 Torr to 15 Torr and pulse repetition rate from 100 Hz to 900 Hz. As a result, the maximum average output was about 20.5 W at the total pressure of 15 Torr, the gas mixture $CO_2:N_2$:He = 1:9:15 and the pulse repetition rate of 700 Hz.

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