Laser-bar stack using ELF heat-sinks mounted kinematically for double-side cooling

被引：1

作者：

Chin, A. K. ^{[1
]}

Manni, J. G. ^{[2
]}

Chin, R. H. ^{[3
]}

Levy, J. ^{[4
]}

Dogan, M. ^{[3
]}

Jacob, J. H. ^{[3
]}

Pathak, R. ^{[5
]}

Wessling, C. ^{[6
]}

Lang, K. D.

Eppich, H. ^{[3
]}

Fryer, J. ^{[7
]}

Haverkamp, T. ^{[6
]}

机构：

[1] Somerville Laser Technol LLC, 15 Ward St, Somerville, MA 02143 USA

[2] JGM Assoc Inc, Burlington, MA 01803 USA

[3] Sci Res Lab Inc, Somerville, MA 02143 USA

[4] Northrop Grumman, Cutting Edge Optron, St Charles, MO 63301 USA

[5] Coherent Inc, Santa Clara, CA 95054 USA

[6] Ingeneric GmBh, Aachen 52068, Germany

[7] Micro Cooling Concepts Inc, Huntington Beach, CA 92647 USA

来源：

HIGH-POWER DIODE LASER TECHNOLOGY AND APPLICATIONS XI | 2013年 / 8605卷

关键词：

Laser-bar stack; enhanced lateral-flow heat-sink; fiber-coupled module; high-brightness fiber-laser pump;

D O I：

10.1117/12.2002230

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a novel, high-power stack of 20% fill-factor, 976nm, laser-diode bars, each directly attached to an enhanced lateral-flow (ELF), copper-based, water-cooled heat-sink. The heat-sinks contain mounting screws that form a kinematic mount to minimize detrimental mechanical-stress on the diode bars while also providing beneficial, double-side cooling of the bars. A stack of 18-bars, emitting 2.54kW, was constructed to validate the technology. Using standard optics and a polarization multiplexer, a 320 mu m diameter, 0.3NA focus is achieved with a 6-bar stack that robustly couples 450W, with a similar to 67% coupling efficiency, from a passive, 400 mu m, 046NA double-clad fiber.

引用

页数：8

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