The Output Characteristics of a Fiber-Coupled Laser-Diode Pumped Ceramic Nd:YAC Laser Due to Thermal Lensing Effect

광섬유 연결 반도체레이저 여기 세라믹 Nd:YAG 레이저에서 열렌즈 효과에 의한 출력특성

  • Ok, Chang-Min (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)
  • 옥창민 (청주대학교 레이저광정보공학과) ;
  • 김병태 (청주대학교 레이저광정보공학과) ;
  • 김덕래 (단국대학교 의학레이저의료기기 연구센터)
  • Published : 2006.10.25


The output characteristics of a ceramic Nd:YAC laser pumped by a fiber-coupled laser diode was investigated. An efficiency and a slope efficiency of 33.8 % and 39.3 % respectively were obtained, under an output coupler reflectance of 90.4 %. The laser power has decreased suddenly due to the thermal tensing effect more than 6 W pumping powers.


  1. 김병태, 김태석, '반도체레이저 단면여기 고체레이저에서의 최적 공진조건에 관한 해석,' 한국광학회지, vol. 8, no. 4, pp. 303-307, 1997
  2. 'Ceramic YAGs set to challenge single crystals,' Opto & Laser Europe, 2001
  3. J. Lu, M. Prabhu, J. Song, C. Li, J. Xu, K. Ueda, A.A. Kaminskii, H. Yagi, T. Yanagitani, 'Optical properties and highly efficient laser oscillation of Nd:YAG ceramics,' Appl. Phys., B 71, pp. 469-473, 2000
  4. W.Koechner, Solid-state Laser Engineering (Springer-Verlag, Berlin, 1999), pp. 413-419
  5. 양동옥, 김병태, '반도체 레이저 측면 여기 Nd:YAG 매질에서의 열영향,' 한국광학회지, vol. 14, no. 1, pp. 44-50, 2003
  6. D. Jaque, U. Caldino, J. J. Romero, J. G. Sole, 'Fluorescence dynamics and laser properties of the $Nd^{3+}:Ca_3Ca_{2- }Ge_3O_{12}$ crystal,' J. Lumin., 83-84, pp. 477, 1999
  7. M. Ohmi, M. Akatsuka, L. Ishikawa, K.Naito, S. Nakai, Y. Yonezawa, Y. Nishida, Y. Izawa, M. Yamanaka, 'High sensitivity two-dimensional thermal and mechanicalstress-induced birefringence measurement in a Nd:YAG rod,' Appl. Opt., 33, pp. 6368-6372, 1994
  8. Welford, D., Rines, D.M., Dinerman, B.J., Martinsen, R., 'Observation of Enhanced Thermal lensing Due to Near-Gaussian Pump Energy deposition in a Laser-Diode Side-Pumped Nd:YAG Laser,' IEEE J. Quantum Electron, vol. 28, no. 4, pp. 1075-1080, 1992
  9. Steve C. Tidwell, Jonathan F. Seamans, Mark S. Bowers, Ananda K. Cousins, 'Scaling CW Diode-End-Pumped Nd:YAG Lasers to High Average Powers,' IEEE J. Quantum Electron, vol. 28, no. 4, pp. 997-1009, 1992
  10. Xiangyu Bao, Zhongli Lin, Hui Zhang, Prasad, V., Shamash, Y., 'Control of the Czochraski Crystal Growth Process,' in American Control Conference, Proc. IEEE, vol. 3, pp. 1530-1534, 1999
  11. J. DONG, J. LU, A. SHIRAKAWA, K. UEDA, 'Optimization of the laser performance in $Nd^{3+}:YAG$ ceramic microchip lasers,' Appl. Phys., B 80, pp. 39-43, 2005

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