Characteristics Improvement of Surface-Emitting Distributed Feedback Lasers with ITO Claddings

Kuo Bin Hong; Ting Yuan Chang; Wen Zheng Xu; Tien-chang Lu; Shing Chung Wang

doi:10.1109/JSTQE.2017.2723842

Characteristics Improvement of Surface-Emitting Distributed Feedback Lasers with ITO Claddings

Kuo Bin Hong, Ting Yuan Chang, Wen Zheng Xu, Tien-chang Lu^*, Shing Chung Wang

^*Corresponding author for this work

Department of Photonics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

In this study, significant improvements in the characteristics of the InAs quantum-dot surface-emitting distributed feedback lasers using indium tin oxide as a cladding material covered by two types of newly designed metal contacts were achieved. Laser characteristics at room temperature including I-V curves, L-I curves, near-field patterns, and lasing spectra are analyzed and discussed. We adopted a metal grating and a metal strip as p-type electrodes to improve the current distribution of the devices. Uniform laser emission in the near-field was observed. Moreover, substantial reductions in the ohmic resistance of 9.35 Ω and a low-threshold current density of 0.28 kA/cm ² were both achieved under continuous-wave operation, leading to the prospect of high-performance surface emitting distributed feedback.

Original language	English
Article number	7972943
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Volume	23
Issue number	6
DOIs	https://doi.org/10.1109/JSTQE.2017.2723842
State	Published - 1 Nov 2017

Keywords

distributed feedback laser
InAs quantum dot
indium tin oxide
metal contact layer
surface emitting laser

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10.1109/JSTQE.2017.2723842

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title = "Characteristics Improvement of Surface-Emitting Distributed Feedback Lasers with ITO Claddings",

abstract = " In this study, significant improvements in the characteristics of the InAs quantum-dot surface-emitting distributed feedback lasers using indium tin oxide as a cladding material covered by two types of newly designed metal contacts were achieved. Laser characteristics at room temperature including I-V curves, L-I curves, near-field patterns, and lasing spectra are analyzed and discussed. We adopted a metal grating and a metal strip as p-type electrodes to improve the current distribution of the devices. Uniform laser emission in the near-field was observed. Moreover, substantial reductions in the ohmic resistance of 9.35 Ω and a low-threshold current density of 0.28 kA/cm 2 were both achieved under continuous-wave operation, leading to the prospect of high-performance surface emitting distributed feedback. ",

keywords = "distributed feedback laser, InAs quantum dot, indium tin oxide, metal contact layer, surface emitting laser",

author = "Hong, {Kuo Bin} and Chang, {Ting Yuan} and Xu, {Wen Zheng} and Tien-chang Lu and Wang, {Shing Chung}",

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AU - Hong, Kuo Bin

AU - Chang, Ting Yuan

AU - Xu, Wen Zheng

AU - Lu, Tien-chang

AU - Wang, Shing Chung

PY - 2017/11/1

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AB - In this study, significant improvements in the characteristics of the InAs quantum-dot surface-emitting distributed feedback lasers using indium tin oxide as a cladding material covered by two types of newly designed metal contacts were achieved. Laser characteristics at room temperature including I-V curves, L-I curves, near-field patterns, and lasing spectra are analyzed and discussed. We adopted a metal grating and a metal strip as p-type electrodes to improve the current distribution of the devices. Uniform laser emission in the near-field was observed. Moreover, substantial reductions in the ohmic resistance of 9.35 Ω and a low-threshold current density of 0.28 kA/cm 2 were both achieved under continuous-wave operation, leading to the prospect of high-performance surface emitting distributed feedback.

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KW - InAs quantum dot

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