【摘要】 对双Wollaston棱镜中光波的传播特性进行了细致和深入的分析 ,给出了棱镜中生成的两束光光程差的具体表达式 ,为偏振型空间调制干涉光谱仪的设计和应用提供了理论依据。在不同切割角条件下 ,对光程差与入射角的关系进行了计算机模拟。模拟结果表明光程差和入射角的关系具有较好的线性 ,切割角越大的线性越好。但是切割角大 ,光容易从棱镜侧面逸出。选择必要的切割角、合适的入射点和恰当的入射角范围是设计双Wollaston棱镜型干涉光谱仪必须考虑的问题更多还原

【Abstract】 The transmission characteristic of beams created in double Wollaston prisms is discussed in detail, the exact expression is given and useful theoretical basis for design & application of spatial modulated interferometer are afforded. Under different cut-angle circumstances the optical path differences(opd) with different incident angles i is calculated accurately and completely. The results show that the opd versus i has nice linearity, and the bigger of cut-angle, the better linearity will be gotten. But the cut-angle is big, the beams escaping from the side face of the prisms is easy. The proper cut-angle, the suitable incident position and the appropriate range of incident angle is the most important question in design spatial modulated interferometer.更多还原