基于飞秒激光写制波导的PPKTP晶体倍频实验研究  

Experimental research on frequency doubling in periodically poled KTiOPO_4 waveguide fabricated by femtosecond laser

作　　者：王珏[1] 涂成厚[1] 张双根[1] 吕福云[1] 

机构地区：[1]南开大学物理科学学院,天津300071

出　　处：《物理学报》2010年第1期307-310,共4页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60677013);高等学校博士学科点专项科研基金(批准号:20060055021)资助的课题~~

摘　　要：在PPKTP晶体上进行了飞秒激光刻写波导的实验研究,优化了c-切PPKTP晶体中写制二型波导的工艺参数.当波导长度为10mm,宽度为14.5μm,准相位匹配波长为1064nm时,实现了单模传输.利用该波导对调QNd:YAG激光进行了准相位匹配倍频实验,实现的二次谐波转换效率为39.8%.We present in this paper the fabrication and characterization of type II waveguide in c-cut periodically poled KTiOPO4 crystal. The waveguide was fabricated by using a femtosecond laser, and the fabrication process was optimized. In our experiments single mode propagation was observed at optimal waveguide width of 14.5 μm and quasi-phase matching wavelength of 1064 nm. The second-harmonic conversion efficiency of 39.8 % can be achieved.

关 键 词：飞秒激光 PPKTP 光波导 

分 类 号：O742[理学—晶体学]