Variation of MQW design parameters in a GaAs/InP-Based LW-VCSEL and its effects on the spectral linewidth

P. Susthitha Menon N V Visvanathan, Kumarajah Kandiah, Sahbudin Shaari

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper reports on the simulative and comparative study on the effects of multi quantum well (MQW) design parameters on the spectral linewidth of a wafer-bonded GaAs/InP-based, 1.5 μm long-wavelength vertical-cavity surface-emitting laser (LW-VCSEL). The device employs InGaAsP MQWs sandwiched between GaAs/AlGaAs and GaAs/AlAs distributed Bragg reflectors (DBR) and utilizes a bottom-emitting, air-post design for current confinement. Among the modeled LW-VCSEL devices, the best linewidth achieved was 41.29 MHz at a peak wavelength of 1.57 μm for 8 MQWs with well thicknesses of 5.5 nm each and barrier thicknesses of 8 nm; equivalent to the experimental device developed in the past. Comparison of linewidth values calculated using developed analytical equations that link the MQW parameters to the spectral linewidth versus the actual linewidth from fabricated devices yields error ratios of ∼ 6% proving a robust approximation has been achieved.

Original languageEnglish
Pages (from-to)209-217
Number of pages9
JournalJournal of Nonlinear Optical Physics and Materials
Volume19
Issue number2
DOIs
Publication statusPublished - Jun 2010

Fingerprint

Surface emitting lasers
surface emitting lasers
Linewidth
Semiconductor quantum wells
quantum wells
Wavelength
cavities
wavelengths
Bragg reflectors
Distributed Bragg reflectors
aluminum gallium arsenides
wafers
gallium arsenide
air
approximation
Air

Keywords

  • air-post
  • gain
  • InGaAsP
  • linewidth
  • LW-VCSEL
  • MQW
  • threshold current

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)

Cite this

Variation of MQW design parameters in a GaAs/InP-Based LW-VCSEL and its effects on the spectral linewidth. / N V Visvanathan, P. Susthitha Menon; Kandiah, Kumarajah; Shaari, Sahbudin.

In: Journal of Nonlinear Optical Physics and Materials, Vol. 19, No. 2, 06.2010, p. 209-217.

Research output: Contribution to journalArticle

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