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Development of Solid-state Optical Cooler Materials to Replace Conventional Cryocoolers Usedfor Cooling SWIR and LWIR Infrared Detectors and Focal-plane-arrays

Award Information
Agency: Department of Defense
Branch: Office for Chemical and Biological Defense
Contract: W911SR-17-C-0044
Agency Tracking Number: C171-001-0023
Amount: $149,990.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: CBD171-001
Solicitation Number: 2017.1
Timeline
Solicitation Year: 2017
Award Year: 2017
Award Start Date (Proposal Award Date): 2017-09-18
Award End Date (Contract End Date): 2018-02-12
Small Business Information
UA Science and Technology Park,9030 S. Rita Road, Suite #120, Tucson, AZ, 85747
DUNS: 014750785
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Arturo Chavez-Pirson
 Optical Engineer/CTO
 (520) 799-7470
 chavez@npphotonics.com
Business Contact
 Linda Schadler
Phone: (520) 405-9826
Email: lschadler@npphotonics.com
Research Institution
N/A
Abstract
We propose an all-fiber approach to heat removal from devices such as IR and LWIR detectors and sensors. In our approach, the cooling fibersegment, the pump fiber laser, and the optical fiber used for photon waste removal are all integrated into a single fiber configuration. NPPhotonics' high efficiency fiber lasers are used to pump high purity doped glass fibers, which provide the cooling action on the affixed heatsource. Our system has several key advantages compared to conventional bulk glass systems. Its cooling power benefits from high opticalconfinement in the fiber core. Second, heat removal and waste photon piping into the fiber occur in the same location (the cooling fibersegment), increasing the fraction of heat that can be dumped at a remote location. Fiber Bragg gratings, which are transparent to the wastephotons and thus minimize fluorescence reabsorption, will be used for enhancing pump absorption. Based on NP Photonics' extensiveexperience in specialty glass and fibers, we will investigate laser cooling in Dy3+ doped glass. In Phase I, we will fabricate Dy3+-doped in bothtellurite and ZBLAN glasses. The glasses will be characterized to determine key parameters for IR fluorescent materials oriented to lasercooling using

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

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