Spectral characteristics of an all solid-state frequency-shifted feedback laser

TLDR

A frequency‑shifted feedback laser (FSF laser) uses a laser cavity closed by first‑order diffracted light from an acousto‑optic modulator. The study presents experimental results and analyses of the spectral characteristics of the all‑solid‑state FSF laser. The authors investigate the oscillation dynamics of the FSF laser through experimental measurements and analytical modeling. The all‑solid‑state FSF laser shows an outstanding oscillation spectrum, consisting of a continuously chirped comb of frequency components.

Abstract

A laser cavity closed via the first-order diffracted light of an acoustooptic modulator is referred to as a frequency-shifted feedback laser (FSF laser). This laser exhibits outstanding features in its oscillation spectrum. We previously demonstrated the first oscillation of an all solid-state FSF laser, and it turned out experimentally that the oscillation spectrum consists of a continuously chirped comb of frequency components. Furthermore, we have been investigating oscillation dynamics both experimentally and analytically for a better understanding of FSF laser. Here experimental results and analyses on the spectral characteristics of the laser are discussed.