73% CW power conversion efficiency at 50 W from 970 nm diode laser bars

Kanskar, M.; Earles, T.; Goodnough, T.J.; Stiers, E.; Botez, D.; Mawst, Luke J.

doi:10.1049/el:20058260

Cited by 101 publications

(39 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Diode efficiency reflects an industry consensus on pumps for LIFE, [6], as well as literature reports for diode lasers operating at 808 and 940~970 nm wavelengths, [e.g. ; [16][17][18] with reported efficiencies >70% from 850 through 980 nm.…”

Section: Appendix: Design and Simulation Basis For Table Imentioning

confidence: 66%

Efficiency of the LIFE Laser - Response to a Request for Information from the National Research Council

Deri¹,

Erlandson²,

Bayramian³

2011

View full text Add to dashboard Cite

System models indicate that the required driver efficiency for inertial fusion energy (IFE) should exceed approximately 12-to-14%, and that further efficiency improvements provide diminishing returns on overall system performance.[1] Notably, these studies show that an optimized system will likely employ drivers with suboptimal efficiency from a purely technical standpoint, due to cost vs. efficiency tradeoffs. For this reason, the LIFE laser point design is optimized for the system (power plant) applications, rather than driver efficiency alone. This document describes the anticipated efficiency of the LIFE laser driver, and the basis for this assessment.

show abstract

Section: Appendix: Design and Simulation Basis For Table Imentioning

confidence: 66%

Efficiency of the LIFE Laser - Response to a Request for Information from the National Research Council

Deri¹,

Erlandson²,

Bayramian³

2011

View full text Add to dashboard Cite

show abstract

“…Since 2001, the diode industry has made great improvements in both power and efficiency, demonstrating up to 270 W diode bars in a recent test of advanced bars (Coherent Inc.,) and up to 73% wall plug efficiencies [7]. Over the last 10 years the $/W has continued to drop and appears to follow a 59% learning curve.…”

Section: Scalingmentioning

confidence: 99%

The mercury laser system – An average power, gas-cooled, Yb:S-FAP based system with frequency conversion and wavefront correction

et al. 2006

View full text Add to dashboard Cite

show abstract

“…Beam combining efficiencies, representing the ratio of the combined power to the sum of power emitted from the individual gain elements, of more than 90% can be reached using this technique [6,7]. When looking for an alternative to sophisticated fiber lasers, diode lasers offer lower optical output powers but very high optical conversion efficiencies [8,9]. Moreover, due to their reduced dimensions such lasers allow for compact combining systems with increased cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

16 W output power by high-efficient spectral beam combining of DBR-tapered diode lasers

Müller¹,

Vijayakumar²,

Jensen³

et al. 2011

Opt. Express

View full text Add to dashboard Cite

Up to 16 W output power has been obtained using spectral beam combining of two 1063 nm DBR-tapered diode lasers. Using a reflecting volume Bragg grating, a combining efficiency as high as 93.7% is achieved, resulting in a single beam with high spatial coherence. The result represents the highest output power achieved by spectral beam combining of two single element tapered diode lasers. Since spectral beam combining does not affect beam propagation parameters, M 2 -values of 1.8 (fast axis) and 3.3 (slow axis) match the M 2 -values of the laser with lowest spatial coherence. The principle of spectral beam combining used in our experiments can be expanded to combine more than two tapered diode lasers and hence it is expected that the output power may be increased even further in the future.

show abstract

73% CW power conversion efficiency at 50 W from 970 nm diode laser bars

Cited by 101 publications

References 4 publications

Efficiency of the LIFE Laser - Response to a Request for Information from the National Research Council

Efficiency of the LIFE Laser - Response to a Request for Information from the National Research Council

The mercury laser system – An average power, gas-cooled, Yb:S-FAP based system with frequency conversion and wavefront correction

16 W output power by high-efficient spectral beam combining of DBR-tapered diode lasers

Contact Info

Product

Resources

About