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Semi-Analytic Fresnel Propagation Simulation

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9451-19-P-0516
Agency Tracking Number: F18B-004-0125
Amount: $149,933.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: AF18B-T004
Solicitation Number: 18.B
Solicitation Year: 2018
Award Year: 2019
Award Start Date (Proposal Award Date): 2018-10-29
Award End Date (Contract End Date): 2019-10-29
Small Business Information
2021 Girard Blvd. SE Suite 150
Albuquerque, NM 87106
United States
DUNS: 794350025
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Jason D Schmidt
 Senior Scientist
 (937) 684-4100
Business Contact
 Robert W. Praus II
Phone: (505) 245-9970
Research Institution
 University of North Carolina at Charlotte
 Mr. Peter Szanton Mr. Peter Szanton
9201 University City Blvd.
Charlotte, NC 28223
United States

 (704) 687-0056
 Nonprofit College or University

Wave-optics simulations are critical tools for analysis of laser directed energy systems. The primary method for conducting these simulations is to evaluate the Fresnel diffraction integral using the angular spectrum method based on the fast Fourier transform (FFT). While FFTs are considered computationally efficient, their use in the Fresnel integral results in difficult grid constraints including zero-padding. In simulating airborne laser systems, Monte Carlo methods are needed to represent random processes like platform jitter and optical turbulence. This combines with the need for time-series to represent beam control systems to create many evaluations. The Fresnel diffraction integral must be evaluated at least once for each time step or random draw. Therefore, we seek the fastest possible numerical calculation of Fresnel diffraction integral. MZA proposes to circumvent the FFT use with a semi-analytic evaluation. This leaves fewer numerical computations and provides numerous benefits over the angular-spectrum method. With this method, zero-padding is unnecessary, and the output grid points are arbitrary.

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

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