CAJ | 학술논문

在激光偏光调制技术中,对称分束镜和超大剪切差的平行分束偏光镜受技术和材料的限制,制作难度很大,为了提高偏光棱镜出射光束的对称性和平行分束性,从复式双反射棱镜结构出发,寻找到两种设计方案,一是改变结构角参量φ和β,该设计不仅能保证分束角的对称,而且可以拓宽分束角,并可以根据需要,选择不同的结构角参量以获得合适的对称分束角.二是把出射面为平面改为两个向外凸的平面,能得到剪切差大的平行出射的o光和e光,且剪切差大小可根据用户要求设计,大大拓宽了双反射偏光棱镜的使用范围.实验结果与理论结果基本一致.
재격광편광조제기술중,대칭분속경화초대전절차적평행분속편광경수기술화재료적한제,제작난도흔대,위료제고편광릉경출사광속적대칭성화평행분속성,종복식쌍반사릉경결구출발,심조도량충설계방안,일시개변결구각삼량φ화β,해설계불부능보증분속각적대칭,이차가이탁관분속각,병가이근거수요,선택불동적결구각삼량이획득합괄적대칭분속각.이시파출사면위평면개위량개향외철적평면,능득도전절차대적평행출사적o광화e광,차전절차대소가근거용호요구설계,대대탁관료쌍반사편광릉경적사용범위.실험결과여이론결과기본일치.
In the technology of laser modulation,it is very difficult to produce bireflective symmetric beam splitting prism and parallel beam splitting prism with large shear difference because of technical and material restrictions.In order to improve the symmetry and parallelism of output beams of a polarization prism,two design schemes are presented from the perspective of the structure of bireflective prism.One scheme is to change angle parameters φ and β,which can not only ensure the symmetry of the splitting beam angle,but also broaden the splitting angle.Also,according to requirements,appropriate symmetric splitting angle can be obtained by choosing different angle parameters.Another scheme is to change one flat face of the exit facet into two convex faces,therefore,big shear difference can be obtained and the shear of the prism can be designed according to the customer's requirements.As a result,the application scope of the bireflective prism will be widened greatly.The calculated result is well in agreement with experiments.