Yun S, Tearney G, de Boer J, Bouma B
Opt Express. 2004 Oct 4;12(20):4822-8. doi: 10.1364/opex.12.004822.
A novel technique using an acousto-optic frequency shifter in optical frequency domain imaging (OFDI) is presented. The frequency shift eliminates the ambiguity between positive and negative differential delays, effectively doubling the interferometric ranging depth while avoiding image cross-talk. A signal processing algorithm is demonstrated to accommodate nonlinearity in the tuning slope of the wavelength-swept OFDI laser source.
提出了一种在光学频域成像（OFDI）中使用声光频移器的新技术。频移消除了正负差分延迟之间的模糊性，有效地使干涉测量范围深度加倍，同时避免图像串扰。展示了一种信号处理算法，以适应扫频OFDI激光源调谐斜率中的非线性。
