Phase-synchronous undersampling in nonlinear spectroscopy

TL;DR

This paper introduces phase-synchronous undersampling in nonlinear spectroscopy, demonstrating its ability to improve signal quality and reduce acquisition time, especially in setups with limited detection rates, validated through experiments.

Contribution

The paper presents a new phase-synchronous undersampling technique and provides theoretical validation and experimental demonstration in quantum beat spectroscopy.

Findings

Undersampling enhances signal quality and reduces acquisition time.

Breakdown conditions for undersampling are identified.

Method benefits setups with limited detection capabilities.

Abstract

We introduce the concept of phase-synchronous undersampling in nonlinear spectroscopy. The respective theory is presented and validated experimentally in a phase-modulated quantum beat experiment by sampling high phase modulation frequencies with low laser repetition rates. The advantage of undersampling in terms of signal quality and reduced acquisition time is demonstrated and breakdown conditions are identified. The presented method is particularly beneficial for experimental setups with limited signal/detection rates.