Atlan Michael, Gross Michel
Laboratoire Kastler Brossel, Université Pierre et Marie-Curie, Centre National de la Recherche Scientifique, UMR 8552, Paris, France. atlan@optique,espci.fr
J Opt Soc Am A Opt Image Sci Vis. 2007 Sep;24(9):2701-9. doi: 10.1364/josaa.24.002701.
We describe a scheme in which a camera is turned into an efficient tunable frequency filter of a few-Hertz bandwidth in an off-axis, heterodyne optical mixing configuration, enabling one to perform parallel, high-resolution coherent spectral imaging. This approach is made possible through the combination of a spatial and temporal modulation of the signal to reject noise contributions. Experimental data obtained with dynamically scattered light by a suspension of particles in Brownian motion is interpreted.
我们描述了一种方案，在该方案中，通过离轴外差光学混频配置，可将相机转变为带宽为几赫兹的高效可调谐频率滤波器，从而能够进行并行、高分辨率的相干光谱成像。通过对信号进行空间和时间调制以抑制噪声贡献，使得这种方法成为可能。对由处于布朗运动的粒子悬浮液产生的动态散射光所获得的实验数据进行了解释。
