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Optical Engineering

Improved mid-infrared interband cascade light-emitting devices
Author(s): Chul S. Kim; William W. Bewley; Charles D. Merritt; Chad L. Canedy; Michael V. Warren; Igor Vurgaftman; Jerry R. Meyer; Mijin Kim
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Paper Abstract

We report interband cascade light-emitting devices (ICLEDs) emitting at peak wavelengths of 3.1 to 3.2  μm that display higher maximum output powers, radiances, and efficiencies than any earlier midwave-infrared LEDs when operated at 10 to 105°C. To enhance the output power, we split the ICLED’s 22 active stages into four groups positioned at antinodes of the optical field so that the emission interferes constructively when reflected at near-normal incidence from the metal contact of the epitaxial-side-down mounted device. At an applied bias of 9.6 V and injection current of 0.6 A, an ICLED with mesa diameter of 400  μm produces 3.1 mW of continuous-wave output power at T=10°C, which corresponds to a radiance of 0.79  W/cm2/sr. The same device generates 1.7 mW at T=105°C.

Paper Details

Date Published: 19 August 2017
PDF: 4 pages
Opt. Eng. 57(1) 011002 doi: 10.1117/1.OE.57.1.011002
Published in: Optical Engineering Volume 57, Issue 1
Show Author Affiliations
Chul S. Kim, U.S. Naval Research Lab. (United States)
William W. Bewley, U.S. Naval Research Lab. (United States)
Charles D. Merritt, U.S. Naval Research Lab. (United States)
Chad L. Canedy, U.S. Naval Research Lab. (United States)
Michael V. Warren, U.S. Naval Research Lab. (United States)
Igor Vurgaftman, U.S. Naval Research Lab. (United States)
Jerry R. Meyer, U.S. Naval Research Lab. (United States)
Mijin Kim, Sotera Defense Solutions, Inc. (United States)

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