Abstract—A method for adjusting an unstable confocal resonator and determining its axis direction using an angular reflector is proposed. A semiconductor laser was used as an auxiliary laser, which set the direction of the cavity axis. A collimator was used as the device that controls tuning. A corner reflector mounted inside the resonator from the side of the concave mirror made it possible to create the “direct” and “reverse” passages of the beam of the collimator through the resonator. This makes it possible to observe images of the collimator scale in the eyepiece from the “direct” and “return” passages. Fine tuning of the resonator is carried out by combining the centers of the scales, while the axis of the resonator coincides with the axis of the collimator.

中文翻译：

---

调整和确定伸缩式谐振器的轴方向

摘要—提出了一种使用角反射镜调整不稳定共聚焦谐振器并确定其轴方向的方法。半导体激光器被用作辅助激光器，其设置腔轴的方向。准直仪被用作控制调谐的设备。从凹面镜的侧面安装在谐振器内部的角反射器使准直仪光束通过谐振器的“正向”和“反向”通过成为可能。这使得可以从“直接”和“返回”通道观察目镜中的准直器刻度图像。通过组合标尺的中心进行谐振器的微调，而谐振器的轴与准直器的轴重合。