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Injection behavior of high-power broad-area diode lasers.

G L Abbas¹, S Yang, V W Chan

¹MIT Lincoln Laboratory, Lexington, Massachusetts 02173, USA.

|September 11, 2009

Summary

This summary is machine-generated.

Injecting a single-mode diode laser into a broad-area diode laser achieves 80 mW single-mode operation. A Fabry-Perot amplifier model explains the injection and beam-steering behavior for device optimization.

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Area of Science:

Optics and Photonics
Semiconductor Lasers

Background:

Broad-area diode lasers often exhibit multimode operation.
Achieving high-power single-mode output is crucial for many applications.

Purpose of the Study:

To investigate single-mode operation in high-power broad-area diode lasers via injection locking.
To develop a model explaining the observed optical phenomena.

Main Methods:

Injection of a single-mode diode laser into a broad-area diode laser.
Spectrally resolved near- and far-field measurements.
Application of a Fabry-Perot amplifier model.

Main Results:

Achieved 80 mW single-mode output power.
Observed an 0.50 degrees-wide far-field lobe.
The Fabry-Perot model qualitatively explained injection and beam-steering.

Conclusions:

The Fabry-Perot amplifier model successfully explains injection and beam-steering in diode lasers.
The model provides criteria for optimizing injection performance in these devices.