Optical Waveguide Formed in Yb:KLu(WO4)2 Crystal by 6.0MeV O+ Implantation
JIANG Yi1, WANG Ke-Ming1, WANG Xue-Lin1, JIA Chuan-Lei1, ZHANG Jian-Xiu2, WANG Ji-Yang2, MA Hong-Ji3, NIE Rui3, SHEN Ding-Yu3
1School of Physics and Microelectronics, Shandong University, Jinan 250100
2State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100
3Key Laboratory of Heavy Ion Physics (Ministry of Education), Peking University, Beijing 100871
Optical Waveguide Formed in Yb:KLu(WO4)2 Crystal by 6.0MeV O+ Implantation
1School of Physics and Microelectronics, Shandong University, Jinan 250100
2State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100
3Key Laboratory of Heavy Ion Physics (Ministry of Education), Peking University, Beijing 100871
Abstract： A planar optical waveguide is formed in monoclinic double rare-earth-tungstate laser crystal Yb:KLu(WO4)2 by 6.0MeV oxygen ion implantation with a dose of 2 1015ions/cm2 at room temperature. Subsequently, annealing at 300°C for an hour in air is performed on the sample to decrease colour centres to improve the thermal stability of the waveguide. The refractive index profiles of the waveguide are reconstructed by an effective refractive index method. Dark modes of the waveguide are observed at wavelengths of 633nm and 1539nm. TRIM'98 is used to simulate the damage profile caused by the implantation process. It is found that the refractive index change may be mainly due to the damage induced by the nuclear energy loss.
2006, Vol. 23 
