NASA SBIR 2003 Solicitation

FORM B - PROPOSAL SUMMARY


PROPOSAL NUMBER:03-S1.06-8020 (For NASA Use Only - Chron: 034987)
SUBTOPIC TITLE:UV and EUV Optics and Detectors
PROPOSAL TITLE:SUPERPOLISHED SI COATED SIC OPTICS FOR RAPID MANUFACTURE OF LARGE APERTURE UV AND EUV TELESCOPES

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
SSG Inc
65 Jonspin Road
Wilmington ,MA 01887 - 1020
(978) 694 - 9991

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Jay   Schwartz
jschwartz@ssginc.com
65 Jonspin Road
Wilmington ,MA  01887 -1020
(978) 694 - 9991
U.S. Citizen or Legal Resident: Yes

TECHNICAL ABSTRACT (LIMIT 200 WORDS)
SSG/Tinsley proposes an innovative optical manufacturing process that will allow the advancement of state-of-the-art Silicon Carbide (SiC) mirrors for large aperture UV and EUV applications. The manufacturing process combines three critical technologies: a slip cast, Reaction Bonded (RB) SiC, an amorphous silicon (Si) coating, and Computer Controlled Optical Surfacing (CCOS) technology. This combination of technologies addresses two critical areas required for enabling cost effective precision optics for large aperture UV and EUV applications: lightweighting of the optical substrate and polishing effort required for reaching final figure and finish. The proposed optical manufacturing flow provides solutions in both of these areas. The ability to near net shape lightweight RB SiC significantly reduces the machining required to prepare the substrate for optical surfacing. The use of a Si-coating on the RB SiC makes it possible substantially improve the removal rate-reducing the time and cost required to precision figure and finish the optic. CCOS superpolishing techniques will be developed that deterministically achieve excellent figure accuracies (<0.01 waves RMS) and low microroughness (< 10 Angstroms RMS) for very low areal densities (~10 kg/m2 at an aperture of 1 meter). Phase 1 process development and demonstration will lead to flight-ready optics in Phase 2.

POTENTIAL NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
Superpolished Si-coated SiC precision aspheric optics are required for large aperture space-based UV and EUV missions. The developed optical manufacturing process will provide significant cost and schedule advantages for NASA Earth and Space Sciences including Solar Physics experiments with apertures similar to JWST or larger.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
A low-cost process for producing thermally stable SiC optics with low surface roughness is required for UV and EUV lithography systems used in the semiconductor industry. Grazing incidence source collectors and imaging systems will benefit from successful Phase 1 and Phase 2. Government applications include optics for high energy lasers and x-ray sources such as National synchrotron sources.