Improving axial resolution in spectral domain low-coherence interferometry through fast Fourier transform harmonic artifacts
Improving axial resolution in spectral domain low-coherence interferometry through fast Fourier transform harmonic artifacts
复制标题
通过快速傅里叶变换谐波伪影提高谱域低相干干涉测量中的轴向分辨率
DOI：
10.1117/1.oe.53.7.073106
复制
发表时间：
2014
影响因子：
1.3
通讯作者：
A. Freitas
中科院分区：
文献类型：
--
作者：
M. P. Raele;L. Tarelho;Carlos Leonardo da Silva Azeredo;I. B. Couceiro;A. Freitas
抽象的。由于信号饱和，傅里叶域中的低相干干涉装置在傅里叶变换过程后可能会出现错误结构；事实上，这些结构位于原始信号的多个频率处，也称为谐波。这项研究有助于更好地理解这一现象。目前工作的目的是表明这些特征可用于提高高反射样品中的差分轴向分辨率。使用光学相干断层扫描系统和校准的台阶高度标准，可以实现大于光源相干长度的分辨率。
Abstract. Low-coherence interferometric setups in the Fourier domain can experience false structures after the Fourier transform procedure due to signal saturation; in fact, these structures are located at multiple frequencies of the original signal, also referred to as harmonics. This study aids in a better understanding of this phenomenon. The aim of the present work was to show that these features can be used to improve differential axial resolution in highly reflective samples. Using an optical coherence tomography system and calibrated step height standards, it was possible to achieve a resolution greater than the light source coherence length.
影响因子：
1.7
作者：
Ripandelli, G;Coppe, A M;Stirpe, M
通讯作者：
Stirpe, M