High average power edge emitting laser diode arrays on silicon microchannel coolers

Mundinger, D.; Beach, Raymond J.; Benett, William J.; Solarz, R.; Sperry, V.; Ciarlo, D.

doi:10.1063/1.103925

Cited by 19 publications

(3 citation statements)

References 3 publications

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“…Microelectronics cooling based on the use of microchannels has received considerable attention over the last 30 years since the seminal work of Tuckerman and Pease [1][2][3]. The understanding of the heat transfer in microchannels using single-phase or two-phase flow has also increased manifold [4] with gas and liquid single-phase flows investigated intensively [5,6].…”

Section: Introductionmentioning

confidence: 99%

High-aspect-ratio metal microchannel plates for microelectronic cooling applications

Desmulliez

Drufke

et al. 2009

J. Micromech. Microeng.

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A new manufacturing process and the characterization of high-aspect-ratio metal microchannel plates for microelectronic cooling applications are reported in this article. A nickel-based microchannel cooling plate, with channels of width 20 μm and aspect ratio up to 3.6:1, has been successfully fabricated using a modified UV-LIGA process. Similar metal microstructures, based on electroplated copper, have also been obtained with a width of 15 μm and an aspect ratio of up to 5:1. In both cases, an over-plate technology was used to electroform the metallic microchannel plates in a single manufacturing step. Hydrodynamic and cooling characteristics of the microchannel plates such as flow rate and heat resistance have been measured. A heat transfer coefficient of 511 W m −2 K −1 for a flow rate of 120 l h −1 has been obtained for the 20 μm wide nickel-based microchannel.

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Section: Introductionmentioning

confidence: 99%

High-aspect-ratio metal microchannel plates for microelectronic cooling applications

Desmulliez

Drufke

et al. 2009

J. Micromech. Microeng.

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“…The thennal fracture limit for a rod is given by =8tR (2) Comparing with relation (1) the maximum pump power is roughly half of that of the slab laser. This rod cavity is designed for a maximum output power of 500W.…”

Section: Rod Cavitymentioning

confidence: 98%

Stacked arrays as pumping modules for high-power cw Nd:YAG lasers

Brand

Hollinger

1995

SPIE Proceedings

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Diode pumping of solid state lasers promises many advantages compared with flashlamp pumping. Such are better efficiency, lower thermal stress, compact design, no high voltage and longer lifetime. In between several possibilities ofpumping configurations direct coupling of laserdiodes and crystal seems to have the highest efficiency. Stacked arrays as pumping modules for Nd:YAG slab and rod lasers are investigated. The stack consists of28 monolithic arrays mounted on copper microchannel coolers. The dimensions of the emiuing area are 50x9mm2 resulting in a maximum pump power density of 107W/cm2. Using a slab crystal with dimensions of 3x16x65 mm and a doping concentration of 0.7 at% Nd, an output power of 140W cw has been achieved. The optical efficiency has been 31%. With the same stacked array a rod of 50mm length and 4mm diameter has been pumped. The pump light has been concentrated into the rod by a cusp shape reflector. Using a stable resonator 170W output power in free running operation and 110W average power in high repetition rate q-switch operation has been achieved.

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“…Progress in one and two dimensional pulsed diode laser arrays has been as rapid as for the cw array devices as summarized and reviewed by Endriz et a1.74 and Beach et al 75. The average power levels of two dimensional arrays is limited ultimately by heat removal techniques which include diamond substrates and microchannel coolers 76. It now appears that average power densities of greater than l000Wcm· 2 are feasible for two dimensional diode laser arrays when appropriate cooling and brightness enhancement approaches are taken.…”

Section: Progress In Diode Laser Pump Sourcesmentioning

confidence: 99%

Solid State Lasers

Inguscio¹,

Wallenstein²

1993

NATO ASI Series

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A series presenting the results of activities sponsored by the NATO Science Committee, which aims at the dissemination of advanced scientific and technological knowledge, with a view to strengthening links between scientific communities. The series is published by an international board of publishers in conjunction with the NATO Scientific Affairs Division NATO-PCO-DATA BASE The electronic index to the NATO ASI Series provides full bibliographical references (with keywords and/or abstracts) to more than 30,000 contributions from international scientists published in all sections of the NATO ASI Series. Access to the NATO-PCO-DATA BASE is possible in two ways: -via online FILE 128 (NATO-PCO-DATA BASE) hosted by ESRIN, Via Galileo Galilei, I-00044 Frascati, Italy -via CD-ROM "NATO Science and Technology Disk" with user-friendly retrieval software in English, French, and German (

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High average power edge emitting laser diode arrays on silicon microchannel coolers

Cited by 19 publications

References 3 publications

High-aspect-ratio metal microchannel plates for microelectronic cooling applications

High-aspect-ratio metal microchannel plates for microelectronic cooling applications

Stacked arrays as pumping modules for high-power cw Nd:YAG lasers

Solid State Lasers

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