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Updated: Jun 14, 2026

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Frequency-switchable CO2 laser: design and performance.

R L Shoemaker1, R E Scotti, B Comaskey

  • 1University of Arizona, Optical Sciences Center, Tucson, Arizona 85721, USA.

Applied Optics
|April 8, 2010
PubMed
Summary
This summary is machine-generated.

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This study presents a carbon dioxide (CO(2)) laser with a cadmium telluride (CdTe) modulator, enabling rapid frequency switching up to 20 MHz in 50 nanoseconds while maintaining stable output intensity. A novel frequency locking scheme eliminates switching transients in the CO(2) gain medium.

Area of Science:

  • Optics and Photonics
  • Laser Technology
  • Materials Science

Background:

  • Rapid frequency tuning is crucial for various laser applications.
  • Existing CO(2) laser systems often face limitations in switching speed and intensity stability.
  • Intracavity modulation techniques offer potential for enhanced laser performance.

Purpose of the Study:

  • To develop a CO(2) laser system with rapid frequency switching capabilities.
  • To maintain constant output intensity during frequency modulation.
  • To address design challenges and present a novel frequency locking scheme.

Main Methods:

  • Utilized a carbon dioxide (CO(2)) laser.
  • Incorporated an intracavity cadmium telluride (CdTe) modulator.

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  • Employed a pulse generator for crystal drive.
  • Developed and implemented a novel laser frequency locking scheme.

    • Main Results:

    • Achieved rapid frequency switching up to 20 MHz within 50 nanoseconds.
    • Maintained output intensity stability to better than 2% during frequency modulation.
    • Successfully eliminated switching transients in the CO(2) gain medium using the novel locking scheme.
    • Demonstrated laser performance consistent with theoretical predictions.

    Conclusions:

    • The developed CO(2) laser with an intracavity CdTe modulator offers significant advancements in frequency agility and intensity stability.
    • The novel frequency locking scheme effectively resolves switching transient issues, enhancing laser operational reliability.
    • This technology holds promise for applications requiring precise and rapid laser frequency control.