Holographic Optical Element-Based Laser Diode Source System for Direct Metal Deposition in Space, Phase II

Metadata Updated: May 2, 2019

To meet the challenges of rapid prototyping, direct hardware fabrication, and on-the-spot repairs on the ground and on NASA space platforms, Physical Optics Corporation (POC) proposed a new Holographic Optical Element-Based Laser Diode Source (HOELDS) system for direct metal deposition (DMD). HOELDS uniquely combines multiple high-power laser diode bars with holographic optical elements, efficient thermal management and innovative focusing optics to achieve a 600 W, 100-micron focused spot for DMD materials processing. The 7-kilogram, 0.1 cubic meter HOELDS system will be ten times as energy efficient as current 1000 kilogram, 20 cubic meter DMD systems, making in-space DMD processing possible for the first time. HOELDS can process aluminum, which is extremely difficult for state-of-the art DMD systems. In Phase I, POC developed a preliminary HOELDS system, theoretical analysis, computer simulation, and component specifications leading to a proof-of-concept prototype. Melting of lead-tin solder with this prototype was demonstrated at NASA Marshall Space Center. The Phase II effort will optimize the system design, optimize fabrication of the holographic optical elements, and scale up the system into a compact high-power HOELDS system prototype capable of DMD. The prototype system will be performance tested for in-space DMD, and will be space qualified.

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Public: This dataset is intended for public access and use. License: U.S. Government Work

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Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

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Harvested from NASA Data.json

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Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_4934
Maintainer Email
Public Access Level public
Bureau Code 026:00
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Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
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Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2006-11-01
Homepage URL https://techport.nasa.gov/view/4934
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-20
Program Code 026:027
Source Datajson Identifier True
Source Hash 6c71420995ec04e53517773adf22ede78f7903b9
Source Schema Version 1.1

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