Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Optimization of Q-switched Operation at a Laser-Diode Pumped Nd:YAG Ceramic Laser

반도체레이저 여기 세라믹 Nd:YAG 레이저에서 Q-스위칭 동작 최적화

  • Shin, Dong-Joon (Department of Laser & Optical information Engineering, Cheongju University) ;
  • Kim, Byung-Tai (Department of Laser & Optical information Engineering, Cheongju University) ;
  • Kim, Duck-Lae (Medical Laser and Device Research Center, Dankook University)
  • 신동준 (청주대학교 레이저광정보공학과) ;
  • 김병태 (청주대학교 레이저광정보공학과) ;
  • 김덕래 (단국대학교 의학레이저의료기기연구센터)
  • Published : 2008.08.25
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Abstract

The output characteristics of a laser-diode pumped electrooptic Q-switched Nd:YAG ceramic laser were investigated. The output energy of a Q-switched Nd:YAG ceramic laser was optimized under an output coupler reflectivity of 77%, a laser-diode pulse width of $1,000\;{\mu}s$, and a delay time of $985\;{\mu}s$. The output energy of the Q-switched pulse was measured to be 0.35 mJ with a pulse width of 4 ns under a pump energy of 17.9 mJ. The output efficiency and the peak power were 1.9% and 87.5 kW, respectively.

광섬유 연결 반도체레이저 여기 세라믹 Nd:YAG 레이저의 전기광학 Q-스위칭 출력 특성에 대해 연구하였다. 세라믹 Nd:YAG 레이저의 Q-스위칭은 여기원의 펄스폭 $1,000\;{\mu}s$, 출력 거울의 반사율 77% 및 지연시간 $985\;{\mu}s$에서 최적화되었다. 여기 에너지 17.9 mJ에서 0.35 mJ의 Q-스위칭된 출력 에너지와 약 4 ns의 펄스폭이 측정되어 1.9%의 출력 효율과 87.5 kW의 첨두 출력을 나타내었다.

Keywords

References

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