Watt-level Tm:LiYF4 channel waveguide laser produced by diamond saw dicing

Watt-level Tm:LiYF4 channel waveguide laser produced by diamond saw dicing

Low-loss surface channel waveguides with a cross-section of 30 × 30 μm2 are produced by diamond saw dicing of 6.2 at.% Tm3+, 3.5 at.% Gd3+:LiYF4 films grown by liquid phase epitaxy (LPE) on (001)-oriented bulk undoped LiYF4 substrates. Pumped by a Ti:Sapphire laser at 783 nm, a continuous-wave Tm:Li...

Full description

Saved in:
Bibliographic Details
Published in:Optics express Vol. 26; no. 19; pp. 24653 - 24662
Main Authors: Loiko, Pavel, Soulard, Rémi, Brasse, Gurvan, Doualan, Jean-Louis, Guichardaz, Blandine, Braud, Alain, Tyazhev, Aleksey, Hideur, Ammar, Camy, Patrice
Format: Journal Article
Language:English
Published: 17-09-2018
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Low-loss surface channel waveguides with a cross-section of 30 × 30 μm2 are produced by diamond saw dicing of 6.2 at.% Tm3+, 3.5 at.% Gd3+:LiYF4 films grown by liquid phase epitaxy (LPE) on (001)-oriented bulk undoped LiYF4 substrates. Pumped by a Ti:Sapphire laser at 783 nm, a continuous-wave Tm:LiYF4 waveguide laser generated 1.30 W at 1880 nm (for π-polarization) with a slope efficiency of 80% with respect to the absorbed pump power. The laser threshold was at 80 mW. The waveguide morphology was studied revealing low roughness (3 ± 2 μm) as expressed by the propagation losses of <0.3 dB/cm. A combination of LPE and diamond saw dicing is a promising technology for multi-watt single-mode channel waveguide lasers and amplifiers.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1094-4087
DOI:10.1364/OE.26.024653