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Title: Mid-infrared light emission from a Fe{sup 2+}:ZnSe polycrystal using quantum cascade laser pumping

We report the realization of light emission from a Fe{sup 2+} doped ZnSe polycrystal with efficient pumping from a quantum cascade (QC) laser. The QC laser photon energy is near the absorption edge of the Fe{sup 2+}:ZnSe with less than ∼60 meV Stokes' shift. The Fe{sup 2+}:ZnSe polycrystal shows an absorption band of ∼2.2 – 5 μm in the mid-infrared (mid-IR) at room temperature, which narrows down to ∼2.4–4.2 μm at 80 K. Clear photoluminescence (PL) from 4.5 μm to 6 μm are observed throughout the temperature range of 300 K to 80 K. At room temperature, the luminescence lifetime is about 0.38 ± 0.1 μs which increases up to 101 ± 2 μs at 118 K. This system transfers energy stored in the upper state of a QC laser with ∼ps lifetime to the Fe{sup 2+}:ZnSe with 10{sup 5} to 10{sup 8} times longer lifetime, at the cost of minute photon energy losses.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08540 (United States)
  2. Department of Physics, University of Alabama at Birmingham, 421 Campbell Hall, 1300 University Blvd., Birmingham, Alabama 35294 (United States)
  3. Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland 21218 (United States)
Publication Date:
OSTI Identifier:
22350843
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; DOPED MATERIALS; ENERGY LOSSES; ENERGY TRANSFER; IRON ADDITIONS; LASER RADIATION; LIFETIME; OPTICAL PUMPING; PHOTOLUMINESCENCE; PHOTONS; POLYCRYSTALS; TEMPERATURE RANGE 0273-0400 K; VISIBLE RADIATION; ZINC SELENIDES