Within the framework of geometric optics, this study analyzes the rotational tuning of the period of an interference pattern formed by converging light beams on a photodetector that is fixed relative to a mirrorless two-beam interferometer based on a beam-splitting cube. Equations are derived, whose solutions are the dependences of the tuning range on the base position of the initial light beam on the input surface of the cube and on the diameter of this beam. These dependences are obtained for several refractive indices of the cube material, and the significance of this parameter for the characteristics of the interferometer under study is shown.

中文翻译：

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具有固定光电探测器的无反光镜干涉仪中全息光栅周期的旋转调谐

在几何光学的框架内，本研究分析了通过将光束会聚在光电探测器上形成的干涉图案周期的旋转调谐，该光电探测器相对于基于分束立方体的无反光镜两光束干涉仪是固定的。推导出方程，其解是调谐范围对立方体输入表面上初始光束的基本位置和该光束直径的依赖性。这些相关性是针对立方体材料的几个折射率获得的，并且显示了该参数对于所研究的干涉仪特性的重要性。