STTR Phase I: Novel Holographic Wavefront Sensing Device Enabling Light Weight, Low Cost, Fast Adaptive Optics Systems

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: 0712256
Agency Tracking Number: 0712256
Amount: $150,000.00
Phase: Phase I
Program: STTR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: EL
Solicitation Number: NSF 06-598
Small Business Information
Bridger Photonics
112 E. Lincoln, 6745 HOLLISTER AVENUE, Bozeman, MT, 59718
DUNS: 788293244
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Jason Brasseur
 Dr
 (406) 599-7657
 brasseur@bridgerphotonics.com
Business Contact
 Jason Brasseur
Title: PhD
Phone: (406) 599-7657
Email: brasseur@bridgerphotonics.com
Research Institution
 Montana State Univ
 Randy T Reibel
 309 Montana Hall
Bozeman, MT, 59717 2470
 (406) 994-6457
 Nonprofit college or university
Abstract
This Small Business Technology Transfer (STTR) Phase I project will determine the feasibility of a novel holographic wave front sensing device. The advantage of this modal holographic wave front sensor is that it optically processes the incoming wave front, automatically generating the coefficients for the feedback signal. This is in contrast to other approaches, which rely on conventional computers to perform the processor intensive wave front expansions before feedback. By using holographic optical processing, the wave front sensor can be made to operate on a much faster time scale allowing for device operation in regimes of heavy turbulence or in extremely high resolution, large aperture systems. Other advantages include reduced size, complexity, and cost of the overall wave front device, allowing for more sensors, actuators and larger closed loop bandwidths for a given fixed budget. The technical work plan includes performance analysis of a multi-channel wave front sensing device, actual testing and measurements on a multi-channel device, examination of the major issues and barriers to practicality, and a full system device design and feasibility study.There are a variety of applications that would benefit from extremely fast, highly complex (i.e. a large number of sensors and actuators) adaptive optics systems. Scientific and government applications include imaging satellites and spacecraft through turbulent atmospheres as well as compensating atmospheric turbulence in astronomical imaging. There has also been substantial interest in adaptive optics for the projection of laser beams through the atmosphere, providing highly focused spots on targets several hundreds of kilometers away. Similar applications, both beaming and imaging, can be envisioned through highly turbulent flows. In each of these major application areas, there is a push towards larger aperture or sparse aperture systems to increase both the light gathering capability and the resolving power of the system. Ultimately, there is a large need for faster adaptive optics systems that are capable of driving hundreds to thousands of actuators at very high closed loop bandwidths. This proposal will enhance scientific knowledge on holographic optical processing and how such technology can be used to create such an applicable, reduced complexity, low cost adaptive optics systems.

* information listed above is at the time of submission.

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