Three dimensional measurement of refractive index using phase tomography

在气体温度或液体浓度分布的测量中，由于传感器(例如热电偶)本身的影响，被测对象的状态会发生变化，因此很难进行正确的测量。在这项研究中，我们提出了一种相位层析成像，它是光学干涉仪和计算机层析成像的耦合方法，即三维无损测量。实验测得的三维气体温度分布与理论分布定性一致。

In measurement of distribution of gas temperature or concentration of liquid, the correct measurement is difficult, since the condition of the object to be measured is changed due to the sensor (e.g thermo couple) itself. In this study, we propose a phase tomography that is a coupling method of optical interferometer and computed tomography that is three dimensional non-destructive measurement. Experimental measurement of three dimensional gas temperature distribution agree with theoretical distribution qualitatively.