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Alternative Methods for Creating a Sodium Guidestar

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9451-19-C-0504
Agency Tracking Number: F17A-005-0074
Amount: $749,553.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: AF17A-T005
Solicitation Number: 17.A
Solicitation Year: 2017
Award Year: 2019
Award Start Date (Proposal Award Date): 2018-11-16
Award End Date (Contract End Date): 2020-11-16
Small Business Information
114 E Haley St. Suite G
Santa Barbara, CA 93101
United States
DUNS: 079260236
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Garrett Cole
 President & CEO
 (805) 284-4156
Business Contact
 Garrett Cole
Phone: (805) 284-4156
Research Institution
 University of New Mexico
 Garrett Cole Garrett Cole
Department of Physics and Astronomy 1919 Lomas Blvd. NE, MSC07 4220
Albuquerque, NM 87131
United States

 (805) 284-4156
 Nonprofit College or University

The development of compact and telescope-deployable laser sources emitting in the yellow portion of the visible spectrum is critical for the advancement of DoD-relevant adaptive optics capabilities. The objective of this project is to continue the development of novel laser architectures based on optically-pumped substrate-transferred epitaxial gain media capable of efficient thermal management and thus power scaling for laser guidestar applications. Unlike conventional semiconductor disk lasers where the integrated Bragg mirror leads to a significant thermal bottleneck, our mirror-free gain chips simplify the epitaxial growth process, show the potential for efficient power scaling, and are amenable to mass manufacturing. These structures may be readily employed in a resonant cavity for laser and pump feedback, with the potential for wide tunability, while exhibiting a narrow laser linewidth. In Phase I, the feasibility of Watt-level output power near room temperature was successfully demonstrated in these devices. In our proposed Phase II, we will develop a prototype laser system to be deployed at the Starfire Optical Range with a near-infrared output power >40 W (1178 nm) frequency doubled to ~30 W at 589 nm. Extensive optimization efforts relating to thermal management will be pursued and ultimately integrated into a breadboard-level laser guidestar testbed.

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

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