Femtosecond Laser-Written Waveguides in a Bismuth Germanate Single Crystal
QIAN Bin1,2, LIAO Yang1, DONG Guo-Ping1, LUO Fang-Fang1, SU Liang-Bi3,2, SUN Sheng-Zhi4, QIU Jian-Rong5
1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 1000493Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000504State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 2000625State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027
Femtosecond Laser-Written Waveguides in a Bismuth Germanate Single Crystal
QIAN Bin1,2, LIAO Yang1, DONG Guo-Ping1, LUO Fang-Fang1, SU Liang-Bi3,2, SUN Sheng-Zhi4, QIU Jian-Rong5
1State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 1000493Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 2000504State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 2000625State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027
摘要We demonstrate the fabrication of symmetric waveguides in a bismuth germanate (BGO) single crystal using a double line approach by an 800nm femtosecond laser. The optical attenuation of the single mode waveguide is measured to be 4.2dB/cm at 633nm. The influence of pulse energy and focal depth on the end facet of the irradiated region is also studied. This technique is promising to fabricate buried BGO waveguide arrays used in positron emission tomography systems.
Abstract：We demonstrate the fabrication of symmetric waveguides in a bismuth germanate (BGO) single crystal using a double line approach by an 800nm femtosecond laser. The optical attenuation of the single mode waveguide is measured to be 4.2dB/cm at 633nm. The influence of pulse energy and focal depth on the end facet of the irradiated region is also studied. This technique is promising to fabricate buried BGO waveguide arrays used in positron emission tomography systems.
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2009, Vol. 26 
