Author:
Tawy Goronwy,Minassian Ara,Damzen Michael J.
Abstract
AbstractWe present several strategies for increasing the output laser power of near-diffraction limited continuous-wave Alexandrite lasers pumped by fibre-coupled red laser diodes. Laser mode size control using a convex mirror with the varying thermal lens is shown to be an efficient method for generating record levels of output power from a diode-pumped Alexandrite laser. 8.6 W is obtained with $$M^{2}<1.1$$
M
2
<
1.1
and an optical efficiency of 27%. 735–790 nm wavelength tuning is demonstrated with $$> {2.5}\,\hbox {W}$$
>
2.5
W
and a record dual-wavelength output power of 4.2 W. In a ring-cavity geometry, 5.1 W is obtained with $$M^{2}<1.1$$
M
2
<
1.1
showing promising potential for multi-watt single-longitudinal-mode operation. Detailed laser cavity modelling including thermal lens analysis is also provided.
Funder
Engineering and Physical Sciences Research Council
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
1 articles.
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