Wang D N, Ning Y N, Grattan K T, Palmer A W, Weir K
Opt Lett. 1993 Nov 15;18(22):1884-6. doi: 10.1364/ol.18.001884.
Results of a study on the use of synthesized light sources in white-light interferometry are presented. The optimum wavelength combination with a pair of multimode laser diodes used to generate a synthetic wavelength source was simulated theoretically and verified experimentally. Using the best wavelength combination, we found that the lowest signal-to-noise ratio required by the system was 18.1 dB in theory and 22.1 dB from experiment. The relationships between the wavelengths of the two diodes used, their coherence lengths, and the signal-to-noise ratio required by the system are shown and discussed.
本文介绍了一项关于在白光干涉测量中使用合成光源的研究结果。理论上模拟并通过实验验证了用于生成合成波长源的一对多模激光二极管的最佳波长组合。使用最佳波长组合，我们发现系统理论上所需的最低信噪比为18.1 dB，实验结果为22.1 dB。文中展示并讨论了所使用的两个二极管的波长、它们的相干长度以及系统所需信噪比之间的关系。
