Applied Optics Group, School of Physical Sciences, University of Kent, Canterbury CT2 7NH, UK.
Opt Lett. 2012 Jun 15;37(12):2424-6. doi: 10.1364/OL.37.002424.
An electronic method of k-space linearization for an analog camera for use in optical coherence tomography is demonstrated. The method applies a chirp to the data transfer clock signal of the camera in order to temporally compensate for diffraction that is nonlinear in wavenumber. The optimum parameters are obtained experimentally and theoretically and are shown to be in good accordance. Close to maximum measurable axial range, by applying this method, the FWHM of the point spread function is reduced by a factor of 5.6 and sensitivity is increased by 9.8 dB.
本文展示了一种用于光学相干断层扫描的模拟相机的 k 空间线性化的电子方法。该方法对相机的数据传输时钟信号施加啁啾，以在时间上补偿在波数上非线性的衍射。通过实验和理论获得了最佳参数，并且两者吻合得很好。通过应用这种方法，在接近最大可测量轴向范围时，点扩散函数的半高全宽减小了 5.6 倍，灵敏度提高了 9.8 dB。
