Mr. Alan Arthur Karpinski Profile

Alan Arthur Karpinski

President at Laser Diode Array Inc

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Proceedings Article | 1 June 1994 Paper

Simple thermal management of long-pulse large multibar laser diode arrays

A. Alan Karpinski

Proceedings Volume 2148, (1994) https://doi.org/10.1117/12.176630

KEYWORDS: Semiconductor lasers

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Simple thermal management of large laser diode arrays can be accomplished by directly mounting laser diode material in a grooved substrate, This "Monolithic" assembly method dramatically simplifies the thermal path from the laser junction to the final user specified heatsink. For pulse width <lms, high density bar packing of 30 to 40 bars per cm is possible , pulse widths from 5 to 10 ms can be supported with packaging densities of 10 to 20 bars per cm and for those who need pure CW, typically 4 to 8 bars per cm arrays can be fabricated all while utilizing simple coolers. For those requiring the highest level of performance the "Bars in Grooves" packaging technology can be hybrid with, impingement, macro I micro channel or even pin type coolers. While Beryllium Oxide (BeO), Aluminum Nitride (AlN) and copper are typical base materials presently utilized for mount fabrication, it is only a matter of time before other very high thermally conductive material, such as diamond become commercially viable options ... The fabrication technology has the added benefits of precision location of emitters: for use with collimation lens. array repairability, bars can be removed and replaced. and requires minimum assembly fixturing, bars self align. and the technology scales both for array size and volume requirements.. The most important factor is that the "Bars in Grooves" assembly method produces laser diode arrays of the highest quality combined with the lowest cost!!

Proceedings Article | 16 June 1993 Paper

Simple thermal management of large multibar laser diode arrays

A. Alan Karpinski

Proceedings Volume 1865, (1993) https://doi.org/10.1117/12.146941

KEYWORDS: Semiconductor lasers, Laser applications, Fiber optics, Composites, Heatsinks, Amplifiers, Silicon, Diamond, Copper, Aluminum

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Simple thermal management of large multi-bar laser diode arrays can be accomplished by directly mounting edge emitting laser material directly into a grooved substrate, thereby greatly reducing the part count and substantially reducing the thermal path. The laser mounts can be `Flat' for pumping `Slabs' or `Curved' for pumping `Rods' or as a base for fiberoptic pump applications. There are three basic concepts for fabrication of laser diode arrays using the bars in grooves assembly methodology. These are best described as: monolithic, composite, and doped.

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