Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A study on the $TEM_{00}$ mode of the pulsed Nd:YAG laser with a single elliptical cavity

단일 타원 펄스형 Nd:YAG 레이저의 $TEM_{00}$ 모드화

  • Lee, D.H. (Dept. of Electrical Eng., Pusan National University) ;
  • Moon, J.K. (Dept. of Electrical Eng., Pusan National University) ;
  • Kwak, B.G. (Dept. of Electrical Eng., Pusan National University) ;
  • Kim, H.J. (Dept. of Electrical Eng., Pusan National University) ;
  • Cho, J.S. (Dept. of Electrical Eng., Pusan National University) ;
  • Park, C.H. (Dept. of Electrical Eng., Pusan National University)
  • Published : 1996.07.22
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Abstract

Md:YAG laser has been used in many applications such as micromachining, nonlinear optical experiments, holography, and rangefinding. These applications quite often require operation of the laser at the $TEM_{00}$ mode since this mode produces the smallest beam divergence, the highest power density, and, hence, the highest brightness. In this study, a pinhole is put between a rod and a half mirror to make the $TEM_{00}$ mode, and then we measured the intensity distribution of the output beam as reducing the diameter of the pinhole from 6mm to 1.5mm. As a result, the optimum size of the pinhole fixed in a resonator to make the $TEM_{00}$ mode was obtained, and we found out that the output beam of the pulsed Nd:YAG laser with a single elliptical cavity has a Gaussian distribution.

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