SiC-Based Laser Fusion Optics

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-FG03-01ER83279
Agency Tracking Number: 65542S01-II
Amount: $750,000.00
Phase: Phase II
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
7960 South Kolb Road, Tucson, AZ, 85706
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 W. Kowbel
 (520) 574-1980
Business Contact
 J. Withers
Title: 65542
Phone: (520) 574-1980
Research Institution
N/A
Abstract
65542 Silicon-carbide-based mirrors are essential if inertial fusion energy is to become practical. Current SiC mirror technologies suffer from several shortcomings including high areal density, impurities, low stiffness, and core/base print-through which has precluded producing acceptable SiC mirrors. This project will develop a hybrid SiC-SiC composite/SiC foam approach to address these limitations. The use of the composite core will provide high thermal conductivity, very high modulus/stiffness, high fracture toughness, and a pure ¿-SiC structure. The SiC foam will eliminate the print-through problem. During Phase I, a 4-inch diameter SiC mirror was fabricated that exhibited less than 10 kg/m2 areal density. The core print-through was eliminated, and a very good microroughness of 4 nm was achieved. Phase II will scale-up processing to 18-inch diameter SiC optics suitable for Inertial Fusion Energy optics. Final polishing techniques will be developed to achieve a flatness under 150 nm combined with 2 nm microroughness. An improved aluminum coating method will be developed to achieve an adherent coating layer that will survive pulse laser testing. Commercial Applications and Other Benefits as described by the awardee: Commercial applications should include space optics, such as lidars and cross-link communication, and ground based applications including high energy lasers

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government