Development of a Laser Micromachining Process for the Fabrication of SiC Mirrors

Award Information
Agency:
Department of Defense
Branch
Missile Defense Agency
Amount:
$99,509.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
FA8650-04-M-5222
Agency Tracking Number:
B041-086-0708
Solicitation Year:
2004
Solicitation Topic Code:
MDA04-086
Solicitation Number:
2004.1
Small Business Information
MOUND LASER & PHOTONICS CENTER, INC.
P.O. Box 223, Miamisburg, OH, 45343
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
927253195
Principal Investigator:
Kenneth Hix
R&D Scientist
(937) 865-3041
kenhix@mlpc.com
Business Contact:
Larry Dosser
President
(937) 865-4481
dosserlr@mlpc.com
Research Institution:
n/a
Abstract
The key goal of this program is to reduce the non-recurring and recurring costs and shorten cycle times for fabrication of the next generation cryogenic telescope structural and optical components. Currently beryllium is used for both the mirrors and the optical bench assemblies in these high performance optical telescopes due to its 1) high stiffness at very light weights and 2) very good thermal properties. However, the use of Be in these telescopes is costly because of the substantial fabrication lead-times associated with the machining and mechanical polishing of mirror surfaces. In addition, the health/environmental hazard related to handling Be is a very significant issue. Over the last few years, silicon carbide (SiC) materials and technologies have matured to the point that they are being baselined for DoD and NASA's operational space flight systems. Recently, Raytheon and MDA have initiated a laser microfabrication process for SiC in the critical optical components of cryogenic telescopes. Developing a laser micromachining capability to fabricate the mirror shape and ultimately polish the surface of a silicon carbide mirror blank will drastically reduce the required lead-time and eliminate the hazards associated with the Be fabrication process. The program outlined in this proposal will determine the appropriate laser for the microfabrication tasks and determine the conceptual design for a SiC mirror fabrication workstation.

* information listed above is at the time of submission.

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