论文标题
对大型准直仪的光学畸变的特征
Characterization of optical aberrations with scanning pentaprism for large collimators
论文作者
论文摘要
我们提出了一个实用的设备，用于表征大型准直镜和镜头的光差，并对波前检测误差进行详细分析。我们利用扫描五杆菌技术来精确测量局部波前斜率，并通过常规的最小二乘法重建传输的波前方法。我们的原则实验证明了针对加拿大量子加密和科学卫星（QEYSSAT）任务开发的20.3 cm镜头的传输波前线性测量。我们的示范显示了波前检测精度优于0.01λ，而在40 cm的范围内，差异角度分辨率小于20μRAD。我们使用三维射线跟踪对光学设置进行建模，并在实验结果与验证我们方法的理论预测之间找到良好的定量一致性。
We present a practical apparatus for characterizing optical aberrations of large collimation mirrors and lenses, and give a detailed analysis of wavefront-detection errors. We utilize a scanning pentaprism technique for precise measurements of local wavefront slopes, and reconstruct transmitted wavefronts via a conventional least-squares method. Our proof-of-principle experiment demonstrates transverse linear measurements of transmitted wavefronts for a 20.3 cm lens developed for Canada's Quantum Encryption and Science Satellite (QEYSSat) mission. Our demonstration shows the wavefront-detection precision better than 0.01λ and the divergence-angle resolution less than 20μrad over the range of 40 cm. We model our optical setup using three-dimensional raytracing and find good quantitative agreement between experimental results and theoretical predictions which validates our methodology.
