Single-Mode Near-Infrared Lasing in a GaAsSb-Based Nanowire Superlattice at Room Temperature

Semiconductor nanowire lasers can produce guided coherent light emission with miniaturized geometry, bringing about new possibilities for a variety of applications including nanophotonic circuits, optical sensing, and on-chip and chip-to-chip optical communications. Here, we report on the realization of single-mode and room-temperature lasing from 890 to 990 nm, utilizing a novel design of single nanowires with GaAsSb-based multiple axial superlattices as a gain medium under optical pumping. The control of lasing wavelength via compositional tuning with excellent room-temperature lasing performance is shown to result from the unique nanowire structure with efficient gain material, which delivers a low lasing threshold of ∼6 kW/cm2 (75 μJ/cm2 per pulse), a lasing quality factor as high as 1250, and a high characteristic temperature of ∼129 K. These results present a major advancement for the design and synthesis of nanowire laser structures, which can pave the way toward future nanoscale integrated optoelectronic systems with superior performance.

Ahtapodov, LyubomirNorwegian University of Science and Technology (author)
Nilsen, Julie S.Norwegian University of Science and Technology (author)
Yang, JianfengUniversity of New South Wales (author)
Gustafsson, AndersLund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-agu (author)
Huh, JunghwanNorwegian University of Science and Technology (author)
Conibeer, Gavin J.University of New South Wales (author)
Van Helvoort, Antonius T.J.Norwegian University of Science and Technology (author)
Fimland, Bjørn OveNorwegian University of Science and Technology (author)
Weman, HelgeNorwegian University of Science and Technology (author)
Norwegian University of Science and TechnologyUniversity of New South Wales (creator_code:org_t)

In:Nano Letters: American Chemical Society (ACS)18:4, s. 2304-23101530-69841530-6992

By the author/editor: Ren, Dingding; Ahtapodov, Lyubo ...; Nilsen, Julie S.; Yang, Jianfeng; Gustafsson, Ande ...; Huh, Junghwan; show more...; Conibeer, Gavin ...; Van Helvoort, An ...; Fimland, Bjørn O ...; Weman, Helge; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Nano technology; and Nano technology

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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