Distinct Lasing Operation From Chirped InAs/InP Quantum-Dash Laser

M. Z. M. Khan; T. K. Ng; Chi-Sen Lee; D. H. Anjum; D. Cha; P. Bhattacharya; B. S. Ooi

doi:10.1109/JPHOT.2013.2272781

IEEE Photonics Journal (Jan 2013)

Distinct Lasing Operation From Chirped InAs/InP Quantum-Dash Laser

M. Z. M. Khan,
T. K. Ng,
Chi-Sen Lee,
D. H. Anjum,
D. Cha,
P. Bhattacharya,
B. S. Ooi

Affiliations

M. Z. M. Khan: <formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula> Photonics Laboratory, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
T. K. Ng: Photonics Laboratory, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
Chi-Sen Lee: <formula formulatype="inline"><tex Notation="TeX">$^{2}$</tex></formula> Department of Electrical Engineering and Computer Science, University of Michigan , Ann Arbor, MI, USA
D. H. Anjum: <formula formulatype="inline"><tex Notation="TeX">$^{3}$</tex></formula> Advanced Nanofabrication and Imaging Core Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
D. Cha: Advanced Nanofabrication and Imaging Core Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
P. Bhattacharya: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
B. S. Ooi: Photonics Laboratory, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia

DOI: https://doi.org/10.1109/JPHOT.2013.2272781
Journal volume & issue: Vol. 5, no. 4
pp. 1501308 – 1501308

Abstract

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We study the enhanced inhomogeneity across the InAs quantum-dash (Qdash) layers by incorporating a chirped AlGaInAs barrier thickness in the InAs/InP laser structure. The lasing operation is investigated via Fabry-Pérot ridge-waveguide laser characterization, which shows a peculiar behavior under quasi-continuous-wave (QCW) operation. Continuous energy transfer between different dash ensembles initiated quenching of lasing action among certain dash groups, causing a reduced intensity gap in the lasing spectra. We discuss these characteristics in terms of the quasi-zero-dimensional density of states (DOS) of dashes and the active region inhomogeneity.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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