# Frequency comb based four-wave-mixing spectroscopy

## TL;DR

This paper demonstrates a novel four-wave-mixing spectroscopy technique utilizing frequency combs, enabling separation of signals via heterodyne detection with different repetition frequencies, advancing spectroscopic measurement capabilities.

## Contribution

The work introduces a new experimental setup for four-wave-mixing spectroscopy using frequency combs and heterodyne detection with different repetition rates.

## Key findings

- Successful demonstration of four-wave-mixing spectroscopy with frequency combs
- Effective separation of excitation and signal in radio frequency domain
- Potential for high-precision spectroscopic measurements

## Abstract

We experimentally demonstrate four-wave-mixing spectroscopy using frequency combs. The experiment uses a geometry where excitation pulses and four-wave-mixing signals generated by a sample co-propagate. We separate them in the radio frequency domain by heterodyne detection with a local oscillator comb that has a different repetition frequency.