Yáñez Etna, Cywiak Moisés, Juan Manuel Franco S
Appl Opt. 2018 May 20;57(15):4153-4157. doi: 10.1364/AO.57.004153.
We demonstrate that an optical probe beam with high spherical aberration used for glucose concentration measurements gives better sensitivity compared to a probe beam free of aberrations, under similar conditions. We place a singlet focusing lens at a large distance from a laser source with a Gaussian intensity profile to obtain a spherically aberrated probe beam with negligible truncation. The aberrated probe beam propagates through a transparent liquid sample. Intensity profiles of the transmitted beam are recorded by means of a homodyne profiler to perform the glucose concentration measurements accurately.
我们证明，在相似条件下，用于葡萄糖浓度测量的具有高球差的光学探测光束比无像差的探测光束具有更好的灵敏度。我们将一个单透镜聚焦透镜放置在距离具有高斯强度分布的激光源很远的地方，以获得截断可忽略不计的球差探测光束。该像差探测光束穿过透明液体样品。通过零差探测器记录透射光束的强度分布，以准确进行葡萄糖浓度测量。
