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High-power, (AlGaIn)(AsSb) semiconductor disk laser at 2.0 microm.

J-M Hopkins1, N Hempler, B Rösener

  • 1Institute of Photonics, SUPA, University of Strathclyde, Wolfson Centre, 106 Rottenrow, Glasgow, G4 0NW, UK. johnmark.hopkins@strath.ac.uk

Optics Letters
|January 17, 2008
PubMed
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We developed a high-power semiconductor disk laser using (AlGaIn)(AsSb) emitting near 2 micrometers. This laser achieved over 5 W output power and tunable wavelengths, demonstrating its potential for various applications.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Laser Physics

Background:

  • Semiconductor disk lasers offer high power and good beam quality.
  • Mid-infrared (2-micrometer) lasers are crucial for spectroscopy and medical applications.
  • Efficient thermal management is key to high-power laser operation.

Purpose of the Study:

  • To report a high-power (AlGaIn)(AsSb) semiconductor disk laser operating around 2 micrometers.
  • To investigate the performance characteristics, including output power, efficiency, and tunability.
  • To assess the impact of thermal management on laser performance.

Main Methods:

  • Fabrication of an (AlGaIn)(AsSb) semiconductor disk laser.
  • Integration with a diamond heat spreader for effective thermal management.

Related Experiment Videos

  • Characterization of output power, slope efficiency, wavelength tunability, and beam quality (M2).

    • Main Results:

    • Achieved a maximum output power exceeding 5 W.
    • Demonstrated slope efficiencies greater than 25%.
    • Tuned the output wavelength over an 80 nm range centered at 1.98 micrometers.
    • Measured beam propagation factor (M2) between 1.1 and 1.4 for powers up to 3 W.

    Conclusions:

    • The (AlGaIn)(AsSb) semiconductor disk laser demonstrates high-power capabilities in the 2-micrometer range.
    • Effective thermal management using a diamond heat spreader is crucial for achieving high output power and efficiency.
    • The laser's tunability and beam quality indicate suitability for demanding applications.