Phase-stabilized complex-decorrelation angiography

Split-spectrum amplitude-decorrelation angiography with optical coherence tomography

Amplitude decorrelation measurement is sensitive to transverse flow and immune to phase noise in comparison to Doppler and other phase-based approaches. However, the high axial resolution of OCT makes it very sensitive to the pulsatile bulk motion noise in the axial direction. To overcome this limitation, we developed split-spectrum amplitude-decorrelation angiography (SSADA) to improve the sig...

Correcting for Decorrelation Due to Atmospheric Phase Errors

Phase Statistics and Decorrelation in S a R Interferograms

SAR interferometry requires a thorough phase control throughout the imaging process. The phaseaccuracy is affected bydecorrelation effects between the individual surveys. The paper presents the probability density function of the interferometric phase and analyzes quantitatively the influence of decorrelation. In panicular, phase aberrations typical for SAR processors are studied. The dependenc...

Blood flow velocity quantification using split-spectrum amplitude-decorrelation angiography with optical coherence tomography.

The split-spectrum amplitude-decorrelation angiography (SSADA) algorithm was recently developed as a method for imaging blood flow in the human retina without the use of phase information. In order to enable absolute blood velocity quantification, in vitro phantom experiments are performed to correlate the SSADA signal at multiple time scales with various preset velocities. A linear model relat...

Phase-stabilized two-dimensional electronic spectroscopy.

Two-dimensional (2D) spectroscopy is a powerful technique to study nuclear and electronic correlations between different transitions or initial and final states. Here we describe in detail our development of inherently phase-stabilized 2D Fourier-transform spectroscopy for electronic transitions. A diffractive-optic setup is used to realize heterodyne-detected femtosecond four-wave mixing in a ...