Diamond-saw-diced multi-color ridge Pr,Gd -LiYF 4 waveguide lasers
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2025-09-29 |
| Journal | Optics Letters |
| Authors | Jonathan Demaimay, Jı Eun Bae, Pavel Loiko, Gurvan Brasse, Florent Starecki |
Abstract
Section titled āAbstractāSingle-crystalline layers of 0.3 at.% Pr, 3.5 at.% Gd:LiYF 4 were grown by liquid phase epitaxy and microstructured using precision diamond-saw dicing, resulting in low-loss (0.16 dB/cm in the red) ridge waveguides with a sub-nm sidewall surface roughness. The continuous-wave red channel waveguide laser generated 504 mW at 639.6 nm with a high slope efficiency of 57.8%, a laser threshold of 34 mW, linearly polarized emission ( Ļ ), and high beam quality (M 2 = 1.66). Laser operation in the orange and deep-red was obtained. The polarized emission properties of Pr 3+ ions in the epitaxial layers are reported.