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Related Experiment Video

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A TIRF Microscopy Technique for Real-time, Simultaneous Imaging of the TCR and its Associated Signaling Proteins
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Compact snapshot dual-mode interferometric system for on-machine measurement.

Daodang Wang1,2, Xiangyu Fu1, Ping Xu1,3

  • 1College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China.

Optics and Lasers in Engineering
|December 21, 2023
PubMed
Summary
This summary is machine-generated.

A new compact interferometer measures surface shape and roughness simultaneously. This dual-mode system simplifies optical manufacturing metrology for enhanced surface characterization.

Keywords:
Optical interferometrydual-mode interferometeron-machine measurementsubaperture stitching

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Area of Science:

  • Optical engineering
  • Metrology
  • Surface characterization

Background:

  • On-machine metrology is crucial for efficient optical manufacturing.
  • Simultaneous surface shape and roughness measurement presents challenges.
  • Existing systems may lack compactness or simplicity.

Purpose of the Study:

  • To propose a compact, dual-mode interferometric system for on-machine metrology.
  • To simplify the measurement of both surface shape and roughness.
  • To enhance the capability for surface characterization in optical manufacturing.

Main Methods:

  • A novel optical filter design separates reference arm beams for dual-mode operation.
  • A pixelated camera with a micro-polarizer array captures simultaneous phase-shifted interferograms.
  • Configuration-optimization-based subaperture stitching extends the measurable aperture.

Main Results:

  • The proposed system successfully performs simultaneous surface shape and roughness measurements.
  • Numerical analysis and experimental validation confirm system feasibility.
  • The system demonstrates portability and suitability for on-machine applications.

Conclusions:

  • The compact snapshot dual-mode interferometer offers a powerful tool for optical manufacturing.
  • It enables on-machine surface characterization over diverse spatial frequencies and aperture sizes.
  • This system addresses the need for efficient and versatile metrology in optical production.