Related Experiment Video
Updated: Feb 5, 2026

Skeletal Muscle Neurovascular Coupling, Oxidative Capacity, and Microvascular Function with 'One Stop Shop' Near-infrared Spectroscopy
Published on: February 20, 2018
Revealing true coupling strengths in two-dimensional spectroscopy with sparsity-based signal recovery
Hadas Frostig1, Tim Bayer1,2, Yonina C Eldar3
1Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel.
Abstract:
Two-dimensional (2D) spectroscopy is used to study the interactions between energy levels in both the field of optics and nuclear magnetic resonance (NMR). Conventionally, the strength of interaction between two levels is inferred from the value of their common off-diagonal peak in the 2D spectrum, which is termed the cross peak. However, stronger diagonal peaks often have long tails that extend into the locations of the cross peaks and alter their values. Here, we introduce a method for retrieving the true interaction strengths by using sparse signal recovery techniques and apply our method in 2D Raman spectroscopy experiments.
More Related Videos
Related Concept Videos
True Stress and True Strain
In contrast, true stress offers a more precise portrayal. It is computed by dividing the...
Relative Strengths of Conjugate Acid-Base Pairs
NMR Spectroscopy: Spin–Spin Coupling
Acid and Bases: Ka, pKa, and Relative Strengths
Acid/Base Strengths and Dissociation Constants
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...

