Open AccessHigh power cryogenic Ho:YAG laser
Author(s) -
M. R. Ganija,
Alexander Hemming,
Nikita Simakov,
Keiron Boyd,
John Haub,
P. J. Veitch,
J. Münch
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.031889
Subject(s) - optics , materials science , laser , thulium , laser beam quality , laser linewidth , fiber laser , brightness , laser power scaling , cryogenic temperature , slope efficiency , optoelectronics , laser beams , physics , composite material
We have improved significantly the brightness of cryogenic Ho:YAG, reporting up to 65 W output power with a beam quality of M 2 <1.3 and a slope efficiency of 71%. The laser emission was ~2 nm wide and centered at 2097.5 nm. This result demonstrates the scalability of both the narrow-line thulium fibre pump laser and the cryogenic laser head.