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Related Experiment Videos

Slanted hole array beam profiler (SHArP)-a high-resolution portable beam profiler based on a linear aperture array.

Xiquan Cui1, Xin Heng, Jigang Wu

  • 1Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA. xiqua@caltech.edu

Optics Letters
|October 17, 2006
PubMed
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We developed a new portable beam profiler using a slanted hole array (SHArP). This device achieves high-resolution beam profiling with a novel aperture array on a CMOS sensor, offering improved accuracy for optical measurements.

Area of Science:

  • Optics and Photonics
  • Instrumentation and Measurement

Background:

  • Accurate beam profiling is crucial for laser system characterization and optimization.
  • Existing beam profilers may lack portability, high resolution, or cost-effectiveness.

Purpose of the Study:

  • To introduce a novel, high-resolution, portable beam profiler.
  • To demonstrate the efficacy of the slanted hole array beam profiler (SHArP) for precise optical measurements.

Main Methods:

  • Development of a slanted hole array beam profiler (SHArP) with apertures fabricated on a metal-coated CMOS imaging sensor.
  • Utilizing a single linear scan to create a virtual grid for beam profiling.
  • Experimental validation using Gaussian beams.

Main Results:

Related Experiment Videos

  • Achieved high-resolution beam profiling of Gaussian beams over a 66.5 microm x 66.5 microm area.
  • Demonstrated a resolution of 0.8 microm, significantly finer than the 10 microm CMOS pixel size.
  • Showcased potential for submicrometer resolution with smaller apertures.

Conclusions:

  • The slanted hole array beam profiler (SHArP) offers a novel and effective method for high-resolution optical beam analysis.
  • The SHArP technology provides a portable and accurate solution for demanding laser measurement applications.
  • The demonstrated fidelity validates the potential of this new beam profiling scheme for scientific and industrial use.