Open AccessSingle-mode and high power waveguide lasers fabricated by ion-exchange
Author(s) -
Giuseppe Della Valle,
A. Festa,
Gino Sorbello,
K. Ennser,
Cedric Cassagnetes,
D. Barbier,
S. Taccheo
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.012334
Subject(s) - materials science , waveguide , optics , laser , slope efficiency , optoelectronics , multi mode optical fiber , phosphate glass , ytterbium , diode , fiber laser , optical fiber , doping , wavelength , physics
We report on a single-end diode-pumped waveguide laser providing output power in excess of 20 mW with 17% slope efficiency in robust single longitudinal and transverse mode operation at 1533.5 nm. The active medium was an Er:Yb-doped waveguide only 9-mm long fabricated by Ag-Na ion-exchange in a phosphate glass. The overall cavity length including butt-coupled fiber-Bragg-grating mirrors was <60 mm. We also report on high power waveguide lasers providing more than 160 mW output power and 46% slope efficiency in multimode operation. Feasibility of high power single mode waveguide lasers based on ion-exchange technology in phosphate glasses is also experimentally investigated by using a 50-mm long active waveguide specially designed for efficient single-end pumping.