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采用退偏量和退偏相位表征退偏效应,当退偏量很小时,可忽略退偏相位,认为退偏效应很小;利用光学矩阵和坐标转换矩阵,建立了双角锥环形腔退偏量和退偏相位随角锥旋转变化的数学模型,并进行了数值模拟。分析结果表明,双角锥镜像对称排置构成环形腔时,可以在一定的偏振方位角的条件下实现退偏量为0,即无退偏效应;当旋转其中一个角锥小于2.5°时,仍可以得到小于0.09的退偏量;而当双角锥中心旋转对称排置时,退偏效应始终较大。
The depolarization effect is characterized by the depolarization and depolarization phases. When the depolarization is small, the depolarization phase can be neglected, and the depolarization effect is considered to be small. By using the optical matrix and the coordinate transformation matrix, the depolarization of the double-cone cone cavity is established Volume and depolarization phase with the pyramid rotation of the mathematical model, and the numerical simulation. The analysis results show that when the dihedral pyramid mirror symmetrically arranges to form a ring cavity, the depolarization amount can be zero without any depolarization effect under a certain azimuth azimuth. When one of the pyramids rotates less than 2.5 °, Still can get less than 0.09 debonding; and when the center of the double pyramid rotation symmetry arrangement, the depolarization effect is always larger.