Liyama M, Kamiya T, Yanai H
Appl Opt. 1978 Jun 15;17(12):1965-71. doi: 10.1364/AO.17.001965.
A new method of measuring the complete optical field distribution (optical field mapping) is proposed and is applied to the measurement of Gaussian beam distribution at its beam waist. This method utilizes an interference technique and uses two single-mode optical fibers as flexible paths. The interference pattern caused by the output beams from the reference fiber and pickup fiber directly gives the relative phase distribution at the input end. For the intensity and phase distribution measurements the experimental ambiguity is as small as 0.1 microm and 1/10 of the wavelength, respectively. Stability of the interference fringe against the distortion of the fiber is also examined experimentally.
提出了一种测量完整光场分布（光场映射）的新方法，并将其应用于测量高斯光束在束腰处的分布。该方法利用干涉技术，使用两根单模光纤作为灵活的路径。由参考光纤和采集光纤输出的光束所产生的干涉图样直接给出输入端的相对相位分布。对于强度和相位分布测量，实验的不确定性分别小至0.1微米和波长的1/10。还通过实验研究了干涉条纹相对于光纤变形的稳定性。
