대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1999년도 하계학술대회 논문집 E
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- Pages.2204-2206
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- 1999
펄스형 Nd:YAG 레이저의 교번 충.방전 방식에 의한 고반복 동작특성
The high repetition operating characteristics of pulsed Nd:YAG laser by alternating charge-discharge system
- 김휘영 (부산대학교 전기공학과) ;
- 박구렬 (부산대학교 전기공학과) ;
- 김병균 (부산대학교 전기공학과) ;
- 홍정환 (부산대학교 전기공학과) ;
- 강욱 (한국전기연구소) ;
- 김희제 (부산대학교 전기공학과)
- Kim, W.Y. (Dept. of Electrical Eng. Pusan National Univ.) ;
- Park, K.R. (Dept. of Electrical Eng. Pusan National Univ.) ;
- Kim, B.G. (Dept. of Electrical Eng. Pusan National Univ.) ;
- Hong, J.H. (Dept. of Electrical Eng. Pusan National Univ.) ;
- Kang, U. (Korea Electrotechnology Research Institute) ;
- Kim, H.J. (Dept. of Electrical Eng. Pusan National Univ.)
- 발행 : 1999.07.19
초록
Pulsed Nd:YAC laser is used widely for materials processing and instrumentation. It is very important to control the laser energy density in materials processing by a pulsed Nd:YAG laser. A pulse repetition rate and a pulse width are regarded as the most dominant factors to control the energy density of laser beam. In this study, the alternating charge-discharge system was designed to adjust a pulse repetition rate. This system is controlled by one chip microprocessor and allows to replace an expensive condenser for high frequency to a cheap condenser for low frequency. In addition. we have investigated the current pulse shape of flashlamp and the operating characteristics of a pulsed Nd:YAG laser. As a result, it is found that the laser output of the power supply using the alternating charge-discharge system is not less than that of typical power supply. As the pulse repetition rate rises from 30pps to 120pps by the step of 30pps at 1200V, it is found that the laser efficiency decreases but the laser output power increases about 6W at each step.
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