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Related Experiment Video

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

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Dual-comb modelocked laser.

Sandro M Link, Alexander Klenner, Mario Mangold

|April 4, 2015

Summary

This summary is machine-generated.

This study introduces a novel semiconductor disk laser (SDL) that emits two synchronized, cross-polarized pulse trains. This breakthrough simplifies carrier-envelope-offset (CEO) frequency measurement without complex interferometers.

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Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Construction and Characterization of External Cavity Diode Lasers for Atomic Physics

Published on: April 24, 2014

Area of Science:

Optics and Photonics
Semiconductor Lasers
Ultrafast Optics

Background:

Semiconductor disk lasers (SDLs) are efficient light sources.
Generating multiple synchronized pulse trains is challenging.
Measuring carrier-envelope-offset (CEO) frequency typically requires complex setups.

Purpose of the Study:

To demonstrate the first SDL emitting two simultaneous, collinear, cross-polarized, gigahertz modelocked pulse trains with different repetition rates.
To simplify the measurement of relative carrier-envelope-offset (CEO) frequency.
To achieve a compact and stable dual-comb laser system.

Main Methods:

Utilized a modelocked integrated external-cavity surface emitting laser (MIXSEL) chip.
Integrated a birefringent crystal into a linear cavity to split the beam.
Employed a simple photodetector and microwave spectrum analyzer for frequency down-conversion.

Main Results:

Achieved simultaneous emission of two collinear, overlapping, cross-polarized, gigahertz modelocked pulse trains.
Successfully down-converted the frequency comb difference to the microwave domain using a simple setup.
Demonstrated direct access to relative CEO frequency without an f-to-2f interferometer.
Stabilized both pulse repetition rates of the dual-comb MIXSEL with excellent noise performance.

Conclusions:

The developed dual-comb MIXSEL offers a compact and efficient solution for generating multiple synchronized optical pulse trains.
The simplified CEO frequency measurement technique significantly reduces system complexity.
This technology has potential applications in spectroscopy, metrology, and optical communications.