Ultrapurification, Crystal Growth, and Characterization of Rare-Earth Doped KPb2Br5 for Mid-Infared Lasers

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$100,000.00
Award Year:
2002
Program:
SBIR
Phase:
Phase I
Contract:
DE-FG02-02ER83403
Award Id:
57095
Agency Tracking Number:
70624S02-I
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
111 Downey Street, Norwood, MA, 02062
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Krishna Mandal
(781) 769-9450
kmandal@eiclabs.com
Business Contact:
David Rauh
70624
(781) 769-9450
drauh@eiclabs.com
Research Institute:
n/a
Abstract
70624 Terbium (Tb3+) doped potassium lead bromide (KPb2Br5) is a new mid-infrared (IR) laser crystal that offers low lattice phonon energy and the possibility of high doping concentrations of Tb3+-ions. Because these ions have large cross sections and excellent energy storage lifetimes, this new mid-IR laser source would greatly improve current remote sensing technology for the monitoring of nuclear explosions and other applications. This project will identify and select optimum growth conditions to produce ultrapure, high quality, large single crystals of KPb2Br5:Tb in a cost-effective way, develop pre-growth (purification) and post-growth treatments to improve the optical quality of the grown crystals, and demonstrate the feasibility of fabricating mid-infrared lasers from these crystals. In Phase I, commercially available precursor materials will be purified using zone refining, and then KPb2Br5:Tb single crystals will be grown using a modified Bridgman-Stockbarger technique. Physical, optical, and spectroscopic properties of the grown crystals will be characterized repetitively to optimize the growth conditions. The performance of the mid-IR lasers fabricated from these crystals will then be evaluated. Commercial Applications and Other Benefits as described by the awardee: The proposed KPb2Br5:Tb material would be used to fabricate compact, highly efficient room temperature mid-infrared lasers, which would find applications in remote sensing instrumentation, environmental monitoring, IR countermeasures, and molecular spectroscopic studies.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government