Talbot外腔锁相相位补偿元件的理论计算  

Phase compensation of Talbot cavity

作　　者：赵鹏飞[1] 郭渭荣[1] 李强[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100022

出　　处：《强激光与粒子束》2007年第1期19-22,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(10276003);北京市自然科学基金重点资助课题(4051001)

摘　　要：在菲涅耳衍射公式和模耦合理论的基础上,对有相位补偿的Talbot外腔锁相在腔内场的分布进行了数值计算。计算结果表明:理想的相位补偿元件模式选择镜能够消除由于边缘效应引起的近场幅度不均匀,而且同相模的衍射损耗非常小,能有效地起到选择同相模的作用。实用的相位补偿元件相位型光栅对近场的幅度没有影响,也能够明显地减小同相模的衍射损耗,起到选择同相模的作用。Phase locking of a diode laser array by an external cavity consisting of a mode selecting mirror or a phase grid was studied theoretically, on the basis of Fresnel diffraction and coupled mode theory. The relative complex amplitude distribution of the emitters operating in different super modes was computed for both cases. The compared results with sinusoid curves demonstrate that the mode selecting mirror is effective for in-phase mode selection and fluctuation elimination of amplitude resulted from edge effect, and the phase grid is also effective for in-phase mode selection.

关 键 词：二极管激光器 锁相 Talbot腔 相位补偿 

分 类 号：TN248[电子电信—物理电子学]