【摘要】 简述全息变间距光栅几何理论,通过分析其线距变化系数,研究了全息记录参数对线密度分布方程系数的约束,给出了使全息记录得到的线密度分布方程与期望方程相吻合的必要条件。同时还给出了遗传算法优化计算后的误差曲线,并对理论分析进行了验证,计算结果与理论分析相吻合。更多还原

【Abstract】 The geometry theory of holographic variable line space(VLS) gratings was briefly described.The essential condition which the groove density distribution equation obtained by holographic recording must be in agreement with the expected equation after analysis of the varying coefficient of line space and the limitations of the holographic recording parameters on the groove density distribution equation.By genetic algorithm,an error curve is obtained after optimal calculation,and it is compared with the theoretical analysis,the result shows that it is in agreement with the theory analysis.更多还原