High-Energy Laser Coatings for Large, Lightweight, and Compliant Deployable Space Optics

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9451-04-C-0147
Agency Tracking Number: F031-1757
Amount: $749,904.00
Phase: Phase II
Program: SBIR
Awards Year: 2004
Solicitation Year: 2003
Solicitation Topic Code: AF03-006
Solicitation Number: 2003.1
Small Business Information
2235 Polvorosa Avenue, Suite 230, San Leandro, CA, 94577
DUNS: 836439968
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Michael McFarland
 (510) 483-4156
 mcfarland@aasc.net
Business Contact
 Mahadevan Krishnan
Phone: (510) 483-4156
Email: krishnan@aasc.net
Research Institution
N/A
Abstract
The purpose of this Phase-II effort is to develop filtered cathodic arc plasma deposition (FCAPD) for applying multi-layer, highly reflective optical coatings to extremely light-weight and large membrane mirrors for space and high-altitude-based high-energy laser applications where glass mirrors are not practical. FCAPD coatings are ideal for this application because the deposition ions have higher energy and thus produce denser films with fewer voids that are less susceptible to changes in environmental conditions and have better adhesion than films produced using other methods. In addition, the intrinsic film stress of FCAPD films can be controlled during deposition, which is critical to controlling the shape of the membrane mirror. To maximize the probability of success, a step-wise approach will be used where the FCAPD process will first be developed on coupon-sized membrane substrates to achieve film thickness and stress control. Once this is achieved, the process will be scaled-up to a ~10 cm diameter membrane mirror and then to an actual 0.25 m diameter prototype. Theoretical calculations will also be performed to determine the effect of substrate heating and radiation pressure on the shape and performance of the mirror system.

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

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