USA flag logo/image

An Official Website of the United States Government

Fiber-Optic Phase Shifting Interferometer

Award Information

Department of Defense
Missile Defense Agency
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Luminit, LLC
1850 W 205th Street Torrance, CA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Fiber-Optic Phase Shifting Interferometer
Agency / Branch: DOD / MDA
Contract: HQ0006-07-C-7741
Award Amount: $99,995.00


To address the MDA need for non-destructive evaluation and detection of surface and subsurface defects in aspheric telescope SiC mirrors, Luminit, LLC proposes to develop a new Fiber Optic Phase Shifting Interferometer (FOPSI). The proposed FOPSI is a non-contact real-time in situ surface roughness monitoring system based on an innovative, modular, highly sensitive interferometer consisting of a movable sensor head and a rapid non-mechanical phase shifting module, using single mode fibers to generate the reference and object waves. A high-speed camera in the sensor head captures a sequence of consecutive interferograms within sub-millsecond time intervals, which are then used to reconstruct the surface profile so that real-time image processing software can detect defects. The lightweight sensor head (<1 kg) can be easily positioned for in situ monitoring and evaluation of a SiC mirror in production. In Phase I Luminit will develop a proof-of-principle FOPSI and demonstrate the feasibility of mapping the surface profile in <5 minutes and detecting defects within 1 micron of a typical 10 inch SiC aspherical mirror surface with an accuracy of 5 nm rms. In Phase II Luminit will develop a full functioning FOPSI for in situ monitoring and evaluation of aspheric telescope SiC mirrors.

Principal Investigator:

Fedor Dimov
Director of Research and Developmen

Business Contact:

Engin Arik
President and CEO
Small Business Information at Submission:

20600 Gramercy Place, Suite 203 Torrance, CA 90501

EIN/Tax ID: 203829605
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No