Dam Jeppe Seidelin, Pedersen Christian, Tidemand-Lichtenberg Peter
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, Roskilde, Denmark.
Opt Express. 2012 Jan 16;20(2):1475-82. doi: 10.1364/OE.20.001475.
Upconversion of images is a generic method for shifting the spectral content of entire images. A comprehensive theory for upconversion of incoherent light images is presented and compared against experiments. In particular we consider the important case for upconversion of infinity corrected light. We show that the spatial resolution for upconversion of incoherent light images is better than for the corresponding coherent image upconversion case. The fundamental differences between upconversion of coherent and incoherent images are investigated theoretically and experimentally. The theory includes the general case of upconversion using TEM(nm) modes.
图像上转换是一种用于改变整个图像光谱内容的通用方法。本文提出了一种非相干光图像上转换的综合理论，并与实验进行了比较。特别是，我们考虑了无穷远校正光上转换的重要情况。我们表明，非相干光图像上转换的空间分辨率优于相应的相干图像上转换情况。从理论和实验上研究了相干图像和非相干图像上转换之间的根本差异。该理论包括使用TEM(nm)模式进行上转换的一般情况。
