CAJ | 학술논문

为提高激光光束输出质量，对激光谐振腔进行了研究和设计。利用菲涅耳-基尔霍夫衍射积分公式，采用数值计算的方式对积分进行离散，并利用迭代法和本征值法对谐振腔的自再现模和衍射损耗进行研究，两种处理方式的结果一致。研究结果表明，对于平面谐振腔的基模衍射损耗只有2.52％。采用数值离散的方式，迭代法可以很容易的给出模式的演化过程，而本征值法可以同时求出所有的模式和损耗。提出的方法为激光器的设计提供了一种很好的研究途径。
위제고격광광속수출질량，대격광해진강진행료연구화설계。이용비열이-기이곽부연사적분공식，채용수치계산적방식대적분진행리산，병이용질대법화본정치법대해진강적자재현모화연사손모진행연구，량충처리방식적결과일치。연구결과표명，대우평면해진강적기모연사손모지유2.52％。채용수치리산적방식，질대법가이흔용역적급출모식적연화과정，이본정치법가이동시구출소유적모식화손모。제출적방법위격광기적설계제공료일충흔호적연구도경。
In order to promote the design and fabrication of the laser resonant cavity and improve the laser beam output quality,in this paper,iterative method and eigenvalue method are used to calculate self-reproducing modes and the dif-fraction loss based on the Fresnel-kirchhoff diffraction theory by using the numerical discretion of the integration. Excel-lent agreements of the diffraction loss and the output patterns obtained by the two methods are found. Results show that for planar mirror cavity,the diffraction loss of the basic mode is as small as 2.52%. Using numerical discretion ap-proach, iterative method can be used to demonstrate the time evolution of the modes while the eigenmode method can be used to achieve the mode distributions and the corresponding loss. The methods proposed here broaden the way of laser design.