4W continuous-wave narrow-linewidth tunable solid-state laser source at 546nm by externally frequency doubling a ytterbium-doped single-mode fiber laser system

Abstract

A high-power continuous-wave coherent light source at 545.5nm is described. We use 8.3W from a solid-state ytterbium-doped single-mode fiber oscillator/amplifier system as input into an external frequency doubling stage. This system produces up to 4.1W of stable green single-frequency laser radiation. We characterize the light source by performing absorption spectroscopy on iodine across the full tuning range of the fiber laser and saturation spectroscopy on one strong iodine line of the doppler-broadened spectrum.

The Production and Study of Cold Antiprotons and Antihydrogen

“…Starting in the Hänsch Laboratory in Garching, and then moving to the Walz Laboratory in Mainz, our collaborators continue to improve a source of Lyman alpha radiation suitable for laser cooling and for 1s-2p spectrosocpy [46,47,48,49,50,51,52,53,54,55]. Four-wave mixing is used to generate continuous, coherent Lyman alpha radiation at 121.5 nm.…”

Novel performance of fiber lasers: tunable operation in visible range

“…Thus, usually singlepass schemes are applied for frequency doubling of fiber lasers, requiring very efficient nonlinear crystals, e.g., periodically poled (PP) crystals like PP lithium niobate (PPLN), etc. [1,2]. At the same time, such crystals have relatively small acceptance spectral width and convert only one polarization component.…”

“…Though several successful attempts on frequency doubling of Yb-doped and RFLs operating at fixed wavelengths are known [1,2], the developed techniques are hardly applicable for tunable operation.…”

Sub-5-pm linewidth, 130-nm-tuning of a coupled-cavity Ti:sapphire oscillator via volume Bragg grating-based feedback

“…Widely tunable lasers with narrow spectral linewidth are used for absorption [1] and Raman spectroscopy [2] and other applications. Coupled-cavity resonators have been used to achieve narrow linewidth tunable laser outputs [3][4][5] but at the expense of increased resonator complexity featuring intra-cavity prism pairs and gratings [6].…”