Low-threshold optically pumped lasing in highly strained germanium nanowires View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2017-12

AUTHORS

Shuyu Bao, Daeik Kim, Chibuzo Onwukaeme, Shashank Gupta, Krishna Saraswat, Kwang Hong Lee, Yeji Kim, Dabin Min, Yongduck Jung, Haodong Qiu, Hong Wang, Eugene A. Fitzgerald, Chuan Seng Tan, Donguk Nam

ABSTRACT

The integration of efficient, miniaturized group IV lasers into CMOS architecture holds the key to the realization of fully functional photonic-integrated circuits. Despite several years of progress, however, all group IV lasers reported to date exhibit impractically high thresholds owing to their unfavourable bandstructures. Highly strained germanium with its fundamentally altered bandstructure has emerged as a potential low-threshold gain medium, but there has yet to be a successful demonstration of lasing from this seemingly promising material system. Here we demonstrate a low-threshold, compact group IV laser that employs a germanium nanowire under a 1.6% uniaxial tensile strain as the gain medium. The amplified material gain in strained germanium can sufficiently overcome optical losses at 83 K, thus allowing the observation of multimode lasing with an optical pumping threshold density of ~3.0 kW cm-2. Our demonstration opens new possibilities for group IV lasers for photonic-integrated circuits. More... »

PAGES

1845

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/s41467-017-02026-w

DOI

http://dx.doi.org/10.1038/s41467-017-02026-w

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1092959409

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/29184064


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Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1038/s41467-017-02026-w'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1038/s41467-017-02026-w'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1038/s41467-017-02026-w'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1038/s41467-017-02026-w'


 

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