On quantum-dot lasing at gain peak with linewidth enhancement factor $α$H = 0

Chow, Weng W.; Zhang, Zeyu; Norman, Justin C.; Liu, Songtao; Bowers, John E.

doi:10.1063/1.5133075

Title: On quantum-dot lasing at gain peak with linewidth enhancement factor $$α$$_H = 0

Journal Article · 03 February 2020 · APL Photonics

DOI: https://doi.org/10.1063/1.5133075 · OSTI ID:1601268

Chow, Weng W. ^[1];

^[2]; Norman, Justin C. ^[2];

^[2]; Bowers, John E. ^[2]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Univ. of California, Santa Barbara, CA (United States)

This paper describes an investigation of the linewidth enhancement factor α_H in a semiconductor quantum-dot laser. Results are presented for active region parameters and laser configurations important for minimizing α_H. In particular, the feasibility of lasing at the gain peak with α_H = 0 is explored. The study uses a many-body theory with dephasing effects from carrier scattering treated at the level of quantum-kinetic equations. InAs quantum-dot lasers with different p-modulation doping densities are fabricated and measured to verify the calculated criteria on laser cavity design and epitaxial growth conditions.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E); US Army Space and Missile Defense Command (USASMDC); Directed Energy Joint Transition Office (DE-JTO); USDOE Office of Science (SC)

Grant/Contract Number:: AC04-94AL85000; AR000067; NA0003525; 214971

OSTI ID:: 1601268

Alternate ID(s):: OSTI ID: 1597122

Report Number(s):: SAND-2020-1617J; 683703; TRN: US2103776

Journal Information:: APL Photonics, Vol. 5, Issue 2; ISSN 2378-0967

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 15 works

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Title: On quantum-dot lasing at gain peak with linewidth enhancement factor $$α$$_H = 0