Beaurepaire E, Boccara A C, Lebec M, Blanchot L, Saint-Jalmes H
Opt Lett. 1998 Feb 15;23(4):244-6. doi: 10.1364/ol.23.000244.
We present a new microscopy system for imaging in turbid media that is based on the spatial coherence gate principle and generates in parallel a complete two-dimensional head-on image without scanning. This system has been implemented in a commercial microscope and preserves the lateral resolution of the optics used. With a spatially incoherent source, speckle-free images with diffraction-limited resolution are recorded at successive depths with shot-noise-limited detection. The setup comprises a photoelastic modulator for path difference modulation and a two-dimensional CCD array and uses a multiplexed lock-in detection scheme.
我们展示了一种用于在浑浊介质中成像的新型显微镜系统，该系统基于空间相干门原理，无需扫描即可并行生成完整的二维正视图图像。该系统已在商用显微镜中实现，并保留了所用光学器件的横向分辨率。使用空间非相干光源，通过散粒噪声受限检测在连续深度处记录具有衍射极限分辨率的无散斑图像。该装置包括用于光程差调制的光弹性调制器和二维电荷耦合器件（CCD）阵列，并采用多路复用锁相检测方案。
