Barolak Jonathan, Goldberger David, Squier Jeff, Bellouard Yves, Durfee Charles, Adams Daniel
Department of Physics, Colorado School of Mines, 1523 Illinois Street, Golden, Colorado 80401, United States of America.
Department of Physics, Colorado School of Mines, 1523 Illinois Street, Golden, Colorado 80401, United States of America.
Ultramicroscopy. 2022 Mar;233:113418. doi: 10.1016/j.ultramic.2021.113418. Epub 2021 Nov 14.
We present the first experimental demonstration of wavelength-multiplexing in single-shot ptychography. Specifically, we experimentally reconstruct the complex transmission profile of a wavelength-independent and wavelength-dependent object simultaneously for 532 nm and 633 nm probing wavelengths. In addition, we discuss the advantages of a more general approach to detector segmentation in single-shot ptychography. A minimization to correct for uncertainties in a priori information that is required for single-shot geometries is presented along with a novel probe constraint. Furthermore, this technique is complementary to dual-wavelength interferometry without the need for an external reference. This work is enabling to imaging technologies and applications such as broadband single-shot ptychography, time-resolved imaging by multiplexed ptychography, real-time inspection for laser micro-machining, and plasma imaging.
我们展示了单次叠层成像术中波长复用的首个实验演示。具体而言，我们通过实验同时针对532纳米和633纳米探测波长重建了与波长无关及与波长有关物体的复透射轮廓。此外，我们讨论了单次叠层成像术中一种更通用的探测器分割方法的优势。提出了一种用于校正单次成像几何结构所需先验信息不确定性的最小化方法以及一种新颖的探针约束。此外，该技术是对双波长干涉测量法的补充，无需外部参考。这项工作有助于实现诸如宽带单次叠层成像术、复用叠层成像术的时间分辨成像、激光微加工的实时检测以及等离子体成像等成像技术和应用。
