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Related Experiment Video

Updated: Mar 9, 2026

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

High peak power cavity dumping semiconductor lasers.

Joshua Myers, Chris Kokoczka, Gary Cook

|January 7, 2017

Summary

This summary is machine-generated.

We developed a high-power semiconductor laser using a novel cavity-dumping technique. This laser delivers kW-class pulses for applications in laser radar, nonlinear optics, and materials processing.

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Last Updated: Mar 9, 2026

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

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Area of Science:

Optics and Photonics
Semiconductor Lasers

Background:

Optically pumped semiconductor lasers offer advantages in efficiency and wavelength flexibility.
High-energy pulsed operation is crucial for applications like laser radar and materials processing.

Purpose of the Study:

To develop a nanosecond pulsed, kW-class optically pumped Indium Gallium Arsenide (InGaAs) semiconductor laser.
To explore cavity-dumping techniques for enhancing pulse energy in Vertical External Cavity Surface Emitting Lasers (VECSELs).

Main Methods:

Utilized an intracavity Pockels cell for cavity-dumping VECSELs.
Employed an optically pumped InGaAs gain medium operating around 1020 nm.
Investigated energy storage within the optical cavity.

Main Results:

Achieved peak powers exceeding 1 kW and pulse energies of 3 μJ.
Demonstrated pulse durations equivalent to the photon round-trip time.
Showcased wavelength tunability within the semiconductor gain bandwidth.

Conclusions:

The developed VECSEL design enables high-energy nanosecond pulse generation.
Cavity dumping is an effective method for achieving kW-class peak powers from semiconductor lasers.
The laser is suitable for incoherent laser radar, nonlinear optics, and materials processing applications.