作　　者： ; ; ; ; ;

机构地区： 北京工业大学

出　　处： 《强激光与粒子束》 2006年第2期177-180,共4页

摘　　要： 从理论和实验上对二极管激光阵列在Talbot外腔中的锁相进行了研究。在同相模和异相模近场分布的基础上,利用1维情况下的菲涅耳衍射公式计算了其远场分布。根据同相模和异相模在Talbot腔中的分布特性,采用1/2 Talbot腔并将外腔镜倾斜一个角度α的方法既能选择同相模,又能使模式的功率损耗最小。二极管激光阵列芯片采用CD金刚石材料,“三明治”结构对其进行封装,明显地减小了阵列的“smile”效应。在实验中实现了二极管激光阵列同相模的锁相输出,远场单瓣模的半高全宽为0.11 mm。 Phase locking of a diode laser array in an external Talbot cavity was studied. Far field distributions of in-phase mode and out-of-phase mode were calculated using Frcsnel diffraction formula of one-dimension on the basis of near field amplitude distribution. According to the distributions of the in-phase mode and out-of-phase mode in fraction Talbot cavity, a tilted external cavity mirror of 1/2 Talbot cavity was adopted, which made the in-phase mode be selected and the loss of the mode be lowered. In order to let the feedback light be injected into the elements effectively in this experiment, a ＂sandwich＂ construction of composite diamond is utilized to package the diode laser array which has obviously eliminated the ＂smile＂ effect. Phase locking of in-phase mode is obtained in the experiment, and the FWHM of the single lobe is 0.11 mm.

关 键 词： 二极管激光阵列 外腔 锁相 同相模 异相模

领　　域： [电子电信]