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Low cost, high resolution optical coherence tomography utilizing a narrowband laser diode

机译:低成本,高分辨率光学相干断层扫描利用窄带激光二极管

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We developed a low cost, high resolution optical coherence tomography system utilizing a narrowband laser diode (LD), which is usually used in optical pickup for compact disc. To achieve high axial resolution even with the narrow bandwidth of the LD, we have constructed a free space interferometer including a phase-diversity detection system and a high numerical aperture (NA) objective. The axial and lateral resolution in the air was about 2.6 μm and 1 μm, respectively. The tomographic imaging of biological tissue was demonstrated, and the results showed that our OCT system enabled cellular-level imaging.
机译:我们开发了一种利用窄带激光二极管(LD)的低成本,高分辨率光相干断层扫描系统,该系统通常用于光盘的光学拾取器。为了实现高轴向分辨率,即使是LD的窄带宽,我们已经构成了一种自由空间干涉仪,包括相分集检测系统和高数值孔径(NA)目标。空气中的轴向和横向分辨率分别为约2.6μm和1μm。证明了生物组织的断层摄影成像,结果表明,我们的OCT系统使能蜂窝水平成像。

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