Microstructured photonic crystal for single-mode long wavelength VCSELs

• In this article, we report on long wavelength (1.27 ÎŒm) single-mode micro-structured photonic crystal strained InGaAs quantum wells VCSELs for optical interconnection applications. Single fundamental mode room-temperature continuous-wave lasing operation was demonstrated for devices designed and processed with different two-dimensional etched patterns. The conventional epitaxial structure was grown by Metal-Organic Vapor Phase Epitaxy (MOVPE) and contains fully doped GaAs/AlGaAs DBRs, one oxidation layer and three strained InGaAs quantum wells. The holes were etched half-way through the top-mirror following various designs (triangular and square lattices) and with varying hole's diameters and pitches. We obtained up to 1.7 mW optical output power and more than 30 dB Side-Mode Suppression Ratio (SMSR) at room temperature and in continuous wave operation. Systematic static electrical, optical and spectral characterization was performed on wafer using an automated probe station. Numerical modeling using the MIT Photonic-Bands (MPB [1]) package of the transverse modal behaviors in the photonic crystal was performed using the plane wave method in order to understand the index-guiding effects of the chosen patterns, and to further optimize the design structures for mode selection at the given wavelength.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

Long-wavelength

Photonic crystals

Singlemode

Strained InGaAs quantum well

VCSEL

Crystal atomic structure

Crystal growth

Dynamics

Electric conductivity

Epitaxial growth

Heterojunctions

Lasers

Metallorganic vapor phase epitaxy

Metals

Molecular beam epitaxy

Optical interconnects

Powders

Quantum well lasers

Semiconducting indium

Semiconductor materials

Semiconductor quantum wells

Semiconductor quantum wires

Spectrum analyzers

Structural metals

Surface emitting lasers

Two dimensional

Wells

Applications.

Continuous-wave lasing

Continuous-wave operation

Design structures

Epitaxial structures

Etched patterns

Fundamental modes

GaAs/AlGaAs

Index-guiding

Laser dynamics

Long wavelengths

Metal-organic vapor phase epitaxy

Mode selections

Numerical modelling

On-wafer

Optical interconnection

Optical output power

Optical-

Oxidation layers

Photonic

Plane wave method

Probe stations

Quantum wells

Room temperatures

Side-mode-suppression-ratio

Single modes

Spectral characterization

Square lattices

Semiconductor lasers

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