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Optimization of Sodium Guide Star Return using Polarization and/or Modulation Control

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9451-19-P-0668
Agency Tracking Number: F19A-008-0068
Amount: $150,000.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: AF19A-T008
Solicitation Number: 19.A
Solicitation Year: 2019
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-06-30
Award End Date (Contract End Date): 2020-06-30
Small Business Information
3040 Presidential Drive, Suite 100
Fairborn, OH 45324
United States
DUNS: 838936599
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 Tamara Payne
 Principal Scientist
 (937) 431-5100
Business Contact
 Anil Chaudhary
Phone: (937) 431-5100
Research Institution
 Georgia State University
 Saturday Sam Saturday Sam
P.O. Box 3999
Atlanta, GA 30302
United States

 (404) 413-5258
 Nonprofit College or University

The research objective of the proposed work is to increase the efficiency of the laser return of a Sodium Guide Star Laser (SGSL) reflected off the sodium layer for increased reliability and applicability of the artificial guide star technique. During Phase I, we will demonstrate the concept of maximizing the SGSL signal returns using numerical simulations that account for the effects of atmospheric turbulence. The simulations will be complemented with laboratory testing of the optics components. The solution will be developed to minimize the effect of the geomagnetic field. The optical beam modulation and polarization control in the laboratory will be attained by using an electro-optics modulator and quarter wave plate on the path of laser delivery and to the return signals. The demonstration of feasibility will be performed for the initial proof of concept and the testing methods at an Air Force SGSL facility. During Phase II, the optical hardware will be built and fabricated based on requirements for the Air Force SGSL facility, followed by on-sky testing to demonstrate improvement in the operational performance of the SGSL system.

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

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