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Journal of Nanophotonics

Progress towards intersubband quantum-box lasers for highly efficient continuous wave operation in the mid-infrared
Author(s): Dan Botez; Gene Tsvid; Mithun D'Souza; Manish K. Rathi; Jae-Cheol Shin; Jeremy Kirch; Luke J. Mawst; Thomas F. Kuech; Igor Vurgaftman; Jerry R. Meyer; Jason J. Plant; George W. Turner
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Paper Abstract

Intersubband Quantum-Box (IQB) lasers; that is, devices consisting of 2-D arrays of ministacks (i.e., 2-4 stages) intersubband QB emitters are proposed, as an alternative to 30-stage quantum-cascade (QC) devices, as sources for efficient room-temperature (RT) emission in the mid-infrared (4-6 μm) wavelength range. Preliminary results include: 1) the design of devices for operation with 50% wallplug efficiency at RT;2) realization of a novel type of QC device: the deep-well (DW)QC laser, that has demonstrated at λ=4.7μm low temperature sensitivity of the threshold current, a clear indication of suppressed carrier leakage; 3) the formation of 2-D arrays at nanopoles by employing nanopatterning and dry etching; 4) the formation of 40nm-diameter, one-stage IQB structures on 100nm centers by preferential regrowth via metal-organic vapor phase epitaxy (MOVPE).

Paper Details

Date Published: 1 January 2009
PDF: 12 pages
J. Nanophoton. 3(1) 031606 doi: 10.1117/1.3085992
Published in: Journal of Nanophotonics Volume 3, Issue 1
Show Author Affiliations
Dan Botez, Univ. of Wisconsin-Madison (United States)
Gene Tsvid, Univ. of Wisconsin-Madison (United States)
Mithun D'Souza, Univ. of Wisconsin-Madison (United States)
Manish K. Rathi, Univ. of Wisconsin-Madison (United States)
Jae-Cheol Shin, Univ. of Wisconsin-Madison (United States)
Jeremy Kirch, Univ. of Wisconsin-Madison (United States)
Luke J. Mawst, Univ. of Wisconsin-Madison (United States)
Thomas F. Kuech, Univ. of Wisconsin-Madison (United States)
Igor Vurgaftman, Naval Research Lab. (United States)
Jerry R. Meyer, Naval Research Lab. (United States)
Jason J. Plant, MIT Lincoln Lab. (United States)
George W. Turner, MIT Lincoln Lab. (United States)


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