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High brightness diodes and 600W and 60% efficient fiber-coupled packages enabled by reduced-mode (REM) diodes
Author(s): M. Kanskar; C. Bai; L. Bao; N. Biekert; Z. Chen; M. DeFranza; M. DeVito; K. Fortier; M. Grimshaw; X. Guan; M. Hemenway; S. Li; E. Martin; R. Martinsen; T. Prunty; W. Urbanek; B. Wilkins; J. Zhang; S. Zhang
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Paper Abstract

In this paper, we show results of further brightness improvement and power-scaling enabled by both the rise in chip brightness/power and the increase in number of chips coupled into a given numerical aperture. We report a new chip technology using x-REM design providing a record ~340 W output from a 2×12 nLIGHT element® in 105 μm diameter fiber. These diodes will allow next generation of fiber-coupled product capable of >250W output power from 105 μm/0.15 NA beam at 915 nm. There is also an increasing demand for low SWaP fiber-coupled diodes for enabling compact high energy laser systems for defense applications. We have demonstrated 600 watts and 60% efficiency at 15C in 220 μm/0.22 NA fiber resulting in specific mass and volume of 0.44 kg/kW and of 0.5 cm3/W respectively.

Paper Details

Date Published: 4 March 2019
PDF: 6 pages
Proc. SPIE 10900, High-Power Diode Laser Technology XVII, 109000H (4 March 2019); doi: 10.1117/12.2510722
Show Author Affiliations
M. Kanskar, nLIGHT, Inc. (United States)
C. Bai, nLIGHT, Inc. (United States)
L. Bao, nLIGHT, Inc. (United States)
N. Biekert, nLIGHT Inc. (United States)
Z. Chen, nLIGHT, Inc. (United States)
M. DeFranza, nLIGHT, Inc. (United States)
M. DeVito, nLIGHT, Inc. (United States)
K. Fortier, nLIGHT, Inc. (United States)
M. Grimshaw, nLIGHT, Inc. (United States)
X. Guan, nLIGHT, Inc. (United States)
M. Hemenway, nLIGHT, Inc. (United States)
S. Li, nLIGHT, Inc. (United States)
E. Martin, nLIGHT, Inc. (United States)
R. Martinsen, nLIGHT, Inc. (United States)
T. Prunty, nLIGHT, Inc. (United States)
W. Urbanek, nLIGHT, Inc. (United States)
B. Wilkins, nLIGHT, Inc. (United States)
J. Zhang, nLIGHT, Inc. (United States)
S. Zhang, nLIGHT, Inc. (United States)

Published in SPIE Proceedings Vol. 10900:
High-Power Diode Laser Technology XVII
Mark S. Zediker, Editor(s)

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