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Related Experiment Video

Updated: May 8, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

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

Published on: November 22, 2019

Single-frequency fiber laser operating at 2.9 μm.

Darren D Hudson1, Robert J Williams, Michael J Withford

  • 1Centre for Ultrahigh-bandwidth Devices for Optical Systems, Institute for Photonics and Optical Science, School of Physics, The University of Sydney, NSW, Australia. hudson@physics.usyd.edu.au

Optics Letters
|August 14, 2013
PubMed
Summary

We demonstrated a single-mode fiber laser at 2914 nm with a narrow linewidth (<0.4 nm) using holmium/praseodymium co-doped ZBLAN fiber and a fiber Bragg grating. Temporal stability and coherence confirm single longitudinal mode operation.

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Area of Science:

  • Laser Physics
  • Optical Engineering
  • Materials Science

Background:

  • Mid-infrared (MIR) lasers are crucial for spectroscopy and medical applications.
  • Developing compact, stable, and narrow-linewidth MIR fiber lasers remains challenging.

Purpose of the Study:

  • To demonstrate a single-longitudinal-mode fiber laser operating at 2914 nm.
  • To investigate the use of holmium/praseodymium co-doped ZBLAN fiber for MIR laser generation.
  • To implement a fiber Bragg grating for narrow-linewidth feedback.

Main Methods:

  • Fabrication of a short (49 mm) holmium/praseodymium co-doped ZBLAN fiber.
  • Inscribing a fiber Bragg grating directly into the ZBLAN fiber using a femtosecond laser point-by-point technique.
  • Characterization of laser output, including linewidth, temporal stability, and coherence.

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Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Related Experiment Videos

Last Updated: May 8, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
08:48

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

Published on: November 22, 2019

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
09:38

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies

Published on: December 18, 2015

Main Results:

  • Successful demonstration of a single-longitudinal-mode fiber laser at 2914 nm.
  • Achieved a spectrometer-limited linewidth of less than 0.4 nm.
  • Confirmed single longitudinal mode operation through temporal stability and coherence measurements.

Conclusions:

  • Holmium/praseodymium co-doped ZBLAN fiber is suitable for generating narrow-linewidth MIR laser light.
  • Directly inscribed fiber Bragg gratings provide effective narrow-linewidth feedback in ZBLAN fibers.
  • The demonstrated laser exhibits excellent stability and coherence, suitable for various applications.