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Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light

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Solid-state transverse Anderson localized fiber laser.

Brian Topper, Cody Bassett, Alexander Neumann

|August 15, 2024

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This summary is machine-generated.

Researchers demonstrate the first all-solid transverse Anderson localizing optical fiber laser. This novel laser utilizes a unique fiber structure for efficient light guidance and laser action.

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Area of Science:

Photonics
Materials Science
Laser Physics

Background:

Optical fiber lasers are crucial for various applications.
Achieving Anderson localization in optical fibers presents unique fabrication challenges.
Developing solid-state laser systems is an ongoing area of research.

Purpose of the Study:

To demonstrate the first all-solid transverse Anderson localizing optical fiber laser.
To investigate the laser characteristics and performance of this novel device.
To explore the underlying mechanisms of light guidance and laser action.

Main Methods:

Utilizing molten core and stack-and-draw fiber fabrication techniques.
Creating a 112 µm core diameter fiber with a random array of Yb-doped high index and passive low index regions.
Monitoring threshold behavior and lasing through output power, beam profiling, spectral content, fluorescence clamping, and temporal intensity.

Main Results:

Successful demonstration of an all-solid transverse Anderson localizing optical fiber laser.
A localized channel guides amplified spontaneous emission, initiating laser action via mixed Anderson localization and step index wave-guiding.
Stable average output power with wavelength hopping between 1066 and 1088 nm.
Highly directional lasing along the fiber axis.

Conclusions:

The study presents a novel approach to optical fiber laser design.
Anderson localization combined with step index wave-guiding enables efficient laser operation in a solid-state fiber.
This technology holds potential for advanced laser applications requiring directional output.