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Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
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Array detector for high energy laser based on diffuse transmission sampling.

Miao Pang1, Jian Rong1, Shan Zhou2

  • 1School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China.

The Review of Scientific Instruments
|February 13, 2014
PubMed
Summary
This summary is machine-generated.

A new diffuse transmission sampling method enhances high-energy laser beam measurements. This array detector offers improved accuracy and durability for laser intensity distribution analysis.

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Area of Science:

  • Optics and Photonics
  • Laser Technology
  • Materials Science

Background:

  • Accurate measurement of large-size, high-energy laser beam intensity distribution is crucial.
  • Existing methods may lack the required accuracy and ability for temporal-spatial analysis.

Purpose of the Study:

  • To propose and develop a novel array detecting method for improved laser beam measurement.
  • To enhance the ability and accuracy of measuring the temporal-spatial distribution of laser intensity.

Main Methods:

  • A diffuse transmission sampling method was designed and implemented.
  • A sampling and attenuating unit using high-temperature-resistant diffuse transmission material (sand-blasted and gold-plated pure copper) was developed.
  • The attenuation ratio formula was derived.

Main Results:

  • Two large-aperture array detectors were developed with 5 mm spatial resolution and ±30° usable angle range.
  • Non-uniformity in laser profile measurement was below 1%, with ~1% repeatability error in power measurement.
  • The array detector can withstand maximal energy density > 10 kJ/cm(2).

Conclusions:

  • The novel array detecting method based on diffuse transmission sampling effectively improves laser beam measurement.
  • The developed detectors demonstrate high accuracy, repeatability, and energy density tolerance.
  • This method provides a robust solution for analyzing large-size, high-energy laser beams.