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Zonal wavefront sensing using a grating array printed on a polyester film.

Biswajit Pathak1, Suraj Kumar2, Bosanta R Boruah1

  • 1Department of Physics, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.

The Review of Scientific Instruments
|January 3, 2016
PubMed
Summary
This summary is machine-generated.

We developed a novel zonal wavefront sensor using diffraction gratings on polyester film. This sensor offers advantages over Shack-Hartmann sensors, including flexible dynamic range and higher frame rates.

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Area of Science:

  • Optics and Photonics
  • Optical Metrology

Background:

  • Zonal wavefront sensing is crucial for optical system alignment and characterization.
  • Traditional Shack-Hartmann sensors utilize lenslet arrays, which can present fabrication challenges.

Purpose of the Study:

  • To develop and demonstrate a novel zonal wavefront sensor.
  • To overcome fabrication limitations of existing wavefront sensing technologies.

Main Methods:

  • Fabrication of a zonal wavefront sensor using an array of binary diffraction gratings on a polyester film.
  • Integration of a focusing lens and a camera for wavefront measurement.
  • Experimental validation using a proof-of-principle setup.

Main Results:

  • Successful demonstration of a zonal wavefront sensor based on diffraction gratings.
  • The proposed sensor exhibits immunity to certain fabrication issues of lenslet arrays.
  • The sensor offers advantages like flexible dynamic range, easy configurability, and enhanced sensing frame rate.

Conclusions:

  • The developed diffraction grating-based zonal wavefront sensor is a viable alternative to Shack-Hartmann sensors.
  • This technology offers significant advantages for various optical applications requiring precise wavefront measurement.