In conventional spectral domain optical coherence tomography (SD-OCT), a beam is focused to one spot on the surface of the sample to acquire depth information beneath that spot. Adjacent spots are serially scanned to obtain a tomographic image of the sample; thus, available OCT techniques can take significant time to scan large objects. This paper illustrates an SD-OCT system involving spectral-slicing of a broadband spectrum to enable the simultaneous acquisition from multiple lateral positions of the sample. Using a wavelength encoding of spatial information, where each lateral location is associated with a specific portion of a source spectrum, multiple lateral spots are interrogated concurrently to improve the imaging speed of SD-OCT. A triple-channel SD-OCT system was devised using a broadband source of centre wavelength 840 nm and full width half maximum (FWHM) bandwidth of 50 nm. Both sample and reference arm beams were split into three channels using two dichroic splitte...

中文翻译：

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用于时空分辨成像的波长编码多通道光谱域光学相干断层扫描（SD-OCT）

在常规的光谱域光学相干断层扫描（SD-OCT）中，光束聚焦到样品表面的一个点上，以获取该点下的深度信息。连续扫描相邻斑点以获得样品的断层图像；因此，可用的OCT技术可能会花费大量时间来扫描大型物体。本文说明了一种SD-OCT系统，该系统涉及宽带频谱的频谱切片，以实现从多个样本横向位置的同时采集。使用空间信息的波长编码，其中每个横向位置与源光谱的特定部分相关联，可以同时询问多个横向斑点，以提高SD-OCT的成像速度。使用中心波长为840 nm的宽带光源和50 nm的半峰全宽（FWHM）带宽设计了一种三通道SD-OCT系统。样品和参考臂光束都使用两个二向色分离器分成三个通道。