Fibre-coupled red diode-pumped Alexandrite TEM00 laser with single and double-pass end-pumping
Author(s)
Arbabzadah, EA
Damzen, MJ
Type
Journal Article
Abstract
We report the investigation of an Alexandrite laser end-pumped by a fibre-coupled red diode laser module. Power, efficiency, spatial, spectral, and wavelength tuning performance are studied as a function of pump and laser cavity parameters. It is the first demonstration, to our knowledge, of greater than 1 W power and also highest laser slope efficiency (44.2%) in a diode-pumped Alexandrite laser with diffraction-limited TEM00 mode operation. Spatial quality was excellent with beam propagation parameter M 2 ~ 1.05. Wavelength tuning from 737–796 nm was demonstrated using an intracavity birefringent tuning filter. Using a novel double pass end-pumping scheme to get efficient absorption of both polarisation states of the scrambled fibre-delivered diode pump, a total output coupled power of 1.66 W is produced in TEM00 mode with 40% slope efficiency.
Date Issued
2016-05-03
Date Acceptance
2016-03-22
Citation
Laser Physics Letters, 2016, 13 (6)
ISSN
1612-202X
Publisher
IOP Publishing
Journal / Book Title
Laser Physics Letters
Volume
13
Issue
6
Copyright Statement
© 2016 Astro Ltd. This is an author-created, un-copyedited version of an article accepted for publication in Laser Physics Letters. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at http://dx.doi.org/10.1088/1612-2011/13/6/065002
Sponsor
European Space Agency / Estec
Grant Number
4000115840/15/NL/RA/zk
Subjects
Optoelectronics & Photonics
0205 Optical Physics
Publication Status
Published
Article Number
065002