Adaptive dual-comb spectroscopy in the green region

TL;DR

This paper demonstrates a dual-comb spectroscopy technique in the visible green region using two frequency-doubled femtosecond fiber lasers, enabling rapid, high-resolution spectral measurements of iodine within 12 ms.

Contribution

It introduces a simple, effective method for extending dual-comb spectroscopy into the visible spectrum with free-running lasers, achieving fast, high-resolution measurements.

Findings

Recorded iodine spectrum within 12 ms at Doppler-limited resolution

Extended dual-comb spectroscopy to the visible spectral range

Used a simple setup with free-running femtosecond lasers

Abstract

Dual-comb spectroscopy is extended to the visible spectral range with a set-up based on two frequency-doubled femtosecond ytterbium-doped fiber lasers. The dense rovibronic spectrum of iodine around 19240 cm-1 is recorded within 12 ms at Doppler-limited resolution with a simple scheme that only uses free-running femtosecond lasers.