Modeling of pulse propagation in a four level atomic medium for gyroscopic measurements

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0415
Agency Tracking Number: N11A-005-0102
Amount: $79,954.00
Phase: Phase I
Program: STTR
Awards Year: 2011
Solicitation Year: 2011
Solicitation Topic Code: N11A-T005
Solicitation Number: 2011.A
Small Business Information
UA Science and Technology Park, 9030 S. Rita Road, Suite #120, Tucson, AZ, -
DUNS: 014750785
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dan Nguyen
 Optical Modeling Engineer
 (520) 799-7419
Business Contact
 James Fountain
Title: Director, Contract Admini
Phone: (520) 799-7424
Research Institution
 University of Arizona
 Sherry L Esham
 PO BOX 3308
888 N. Euclid Ave., Ste 510
Tucson, AZ, 85722-3308
 (520) 626-6000
 Nonprofit college or university
We propose to develop numerical methodologies that can be used as alternatives to standard finite-difference time-domain algorithms, and that will offer substantial reductions in numerical complexity (notably CPU-time requirements) without the need to trade-off flexibility for overall robustness. In the initial phase, we propose a two-pronged approach, in which we evaluate two alternatives: (i) a time-dependent transfer matrix (TDTM) approach; and (ii) a slowly-varying envelope function (SVE) approach. In Phase I, we will develop both methodologies, assess their performance characteristics, and choose the best for continued development. Comparative evaluations will be done by numerically solving the relevant equations and comparing performance with currently existing Navy codes. Both proposed methods (TDTM and SVE) are suitable for dealing with co- and counter-propagating beams, and for including the full nonlinear interaction between light fields and four-level N-scheme atomic systems. Hence, both schemes are suitable for simulating ring-resonator gyroscopes with Sagnac phase enhancements due to EIT-like quantum coherences. In Phase II, we would develop a full-scale numerical model, and, if requested, fabricate a prototype fiber-optic gyroscope based on NP Photonics"specialty fiber, and fiber laser capabilities.

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

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