Uehara N, Ueda K
Appl Opt. 1995 Sep 1;34(25):5611-9. doi: 10.1364/AO.34.005611.
We describe the accurate measurement of the radius of curvature of a concave mirror in a Fabry-Perot interferometer with a finesse of 78,100. The radius of curvature of the concave mirror is determined by measuring the free spectral range and the transverse-mode range with the frequency response functions. The radii of curvature at two orthogonal (x and y) axes on the mirror surface resulting from the polishing nonisotropy were accurately measured to be r(x) = 1008.46 mm and r(y) = 1006.94 mm, respectively, with an accuracy of 8 × 10(-5). This accuracy is the best to our knowledge. The power dependence of the radii of curvature to the cavity internal intensity at a steady state was measured to be dr(x)/dI(c) = +60 µm/(MW/cm(2)) at the x axis and dr(y)/dI(c) = +47 µm/(MW/cm/(2)) at the y axis to an intensity of 2.1 MW/cm(2).
我们描述了在精细度为78100的法布里 - 珀罗干涉仪中对凹面镜曲率半径的精确测量。通过使用频率响应函数测量自由光谱范围和横向模式范围来确定凹面镜的曲率半径。由于抛光各向异性，在镜面上两个正交（x和y）轴处的曲率半径被精确测量为r(x) = 1008.46毫米和r(y) = 1006.94毫米，精度为8×10^(-5)。据我们所知，这一精度是最佳的。在稳态下，测量了曲率半径对腔内强度的功率依赖性，在x轴上为dr(x)/dI(c) = +60 µm/(MW/cm²)，在y轴上为dr(y)/dI(c) = +47 µm/(MW/cm²)，强度为2.1 MW/cm²。
