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Related Experiment Video

Updated: Jun 16, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Published on: April 1, 2020

Gallium arsenide laser-array-on-silicon package.

J D Crow, L D Comerford, J S Harper

|February 23, 2010

Summary

This summary is machine-generated.

This study presents a silicon-packaged monolithic array of aluminum gallium arsenide (AlGaAs) lasers and fiber lightguides, achieving up to 80% coupling efficiency and 70 mW output power for reliable laser operation.

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Last Updated: Jun 16, 2026

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Area of Science:

Optoelectronics
Semiconductor Lasers
Fiber Optics

Background:

Monolithic integration of optoelectronic components is crucial for advanced photonic systems.
Efficient light coupling between semiconductor lasers and optical fibers is a key challenge.

Purpose of the Study:

To develop and characterize a monolithic array of AlGaAs lasers integrated with fiber lightguides on a silicon substrate.
To optimize components for high lightguide output radiance and reliable continuous-wave (cw) laser operation.

Main Methods:

Fabrication of a monolithic array integrating AlGaAs lasers and fiber lightguides on a silicon substrate.
Optimization of laser and lightguide components for maximum coupling efficiency.
Characterization of output power, coupling efficiency, and crosstalk in multi-device arrays.

Main Results:

Achieved coupling efficiencies up to 80% between AlGaAs lasers and fiber lightguides.
Observed output powers up to 70 mW cw from 50-microm core diameter lightguides (0.15 numerical aperture).
Fabricated eight-device array multi-spot packages delivering 10 mW/spot, limited by laser quality and cooling.

Conclusions:

Demonstrated a high-performance monolithic AlGaAs laser and fiber lightguide array on silicon.
Highlighted the potential for high-radiance, efficient fiber-coupled laser sources.
Identified fabrication tolerances and crosstalk as key factors for further array development.