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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/20478298
Record Status
Checked
Record Id
20478298
Title
Joule-Class 940-nm Diode Laser Bars for Millisecond Pulse Applications
Contributors
P Crump
,
C Frevert
,
A Ginolas
,
S Knigge
,
A Maabdorf
,
J Lotz
,
W Fassbender
,
J Neukum
,
J Körner
,
T Töpfer
,
A Pranovich
,
M Divoky
,
A Lucianetti
,
T Mocek
,
K Ertel (STFC Rutherford Appleton Lab.)
,
M De Vido (STFC Rutherford Appleton Lab.)
,
G Erbert
,
G Trankle
Abstract
The use of long resonators (for improved thermal and electrical resistance) and advanced facet passivation (for high power) is shown to enable Joule-class pulse emission from single passively cooled 1-cm diode laser bars emitting at 940 nm. Bars on CS-mount deliver pulse energy of 1 J at 60% power conversion efficiency within a 7-nm spectral window, under quasi-continuous wave conditions (1.2 ms 10 Hz). Robustness of device performance is confirmed via burn-in and multisite testing. Joule-per-bar performance is also maintained for conduction cooled monolithic stacked arrays, adapted for bars with long resonators. Although these packages only cool the laser bar via their rear edge, peak power, lateral far field, and spectral width remain consistent with the requirements for pumping solid state lasers and scale as predicted with self-heating. An energy density >10 J/cm2 is delivered from the stack surface, for brightness >3 MW/(cm2-sr). Index Terms—Semiconductor laser arrays, power conversion, pulse power systems, pumps, YAG lasers, cryogenics.
Organisation
CLF
,
CLF-LSD
,
STFC
Keywords
CLF 2014-2015
,
Power conversion
,
YAG lasers
,
Cryogenics
,
Pulse power systems
,
Pumps
,
Semiconductor laser arrays
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Journal Article
IEEE Photonics Technology Letters 27, no. 15 (2015): 1663-1666.
doi:10.1109/LPT.2015.2434095
2015
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