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Related Experiment Video

Updated: Nov 1, 2025

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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Published on: November 22, 2019

Laser to laser power conversion with remote signaling.

Brendan Roycroft, Meena Baskaran, David McMahon

|June 22, 2021

Summary

This study shows efficient laser power conversion using an edge-coupled waveguide, achieving record voltage for optically pumped lasing. This enables power-free data transmission for medical and photonics applications.

Area of Science:

Photonics
Optoelectronics
Semiconductor devices

Background:

Optical pumping is crucial for laser operation and power conversion.
Edge-coupled waveguide configurations offer efficient light manipulation.
High power conversion efficiency is essential for practical optoelectronic devices.

Purpose of the Study:

To demonstrate laser power conversion using an edge-coupled waveguide.
To achieve high open circuit voltage and power conversion efficiency.
To explore the application of this technology in power-free data transmission.

Main Methods:

Utilizing a laser with 0.87 eV (1427 nm) emission to optically pump a second laser with 0.80 eV (1540 nm) emission.
Employing an edge-coupled waveguide configuration for efficient optical coupling.

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Last Updated: Nov 1, 2025

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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Measuring fiber-to-device and internal power conversion efficiencies, as well as voltage at maximum power.

Main Results:

Achieved maximum possible open circuit voltage of 0.83 V due to optically pumped lasing.
Demonstrated a fiber-to-device power conversion efficiency of 33%.
Internal power conversion efficiency ranged from 57% to 51%, with a record voltage at maximum power of 0.6 V for the wavelength range.

Conclusions:

The demonstrated edge-coupled waveguide configuration enables efficient laser power conversion and high voltage output.
The optically pumped device facilitates power-free 500 Mbps upstream data transmission.
This technology holds promise for compact powering and signaling in minimally invasive medical interventions and remote photonics.