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Pulsed laser beam control by hot spot tracking.

J S Accetta1, A Erteza

  • 1J. S. Accetta, Inc., P.O. Box 2405, Ann Arbor, Michigan 48103, USA.

Applied Optics
|August 1, 1983
PubMed
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This study introduces a body-centered reference for precise pulsed laser hot spot tracking. A compensation scheme enhances stability and reduces boresight error drift for optimal performance.

Area of Science:

  • Physics
  • Optical Engineering
  • Thermal Science

Background:

  • Precision tracking of pulsed laser hot spots is critical in various scientific and industrial applications.
  • Existing methods face challenges with inherent instability and tracking resolution.
  • Infrared sensing offers a potential avenue for non-contact hot spot monitoring.

Purpose of the Study:

  • To evaluate a novel self-developed body-centered reference system for pulsed laser hot spot tracking.
  • To compare the tracking resolution and sensitivity of infrared sensors in different wavelength bands.
  • To develop and assess a compensation scheme for improving tracking stability and reducing boresight error drift.

Main Methods:

  • Numerical computer simulation employing a solution to the heat equation with time-varying input flux.

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  • Analysis of tracking performance using two common infrared sensor bands.
  • Implementation and evaluation of a simple compensation scheme to mitigate instability.

    • Main Results:

    • The body-centered reference system demonstrates feasibility for precision hot spot tracking.
    • Comparison reveals differences in resolution and sensitivity between infrared sensor bands.
    • The proposed compensation scheme significantly improves boresight error drift.

    Conclusions:

    • The developed body-centered reference is effective for pulsed laser hot spot tracking.
    • Sensor wavelength band and sampling time selection are crucial for optimizing performance.
    • The compensation strategy offers a practical solution for enhancing tracking accuracy and stability.