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Phaseless Terahertz Coded-Aperture Imaging Based on Incoherent Detection.

Long Peng1, Chenggao Luo2, Bin Deng3

  • 1School of Electronic Science, National University of Defense Technology, Changsha 410073, China. penglong_nudt@163.com.

Sensors (Basel, Switzerland)
|January 13, 2019
PubMed
Summary
This summary is machine-generated.

We introduce a new phaseless terahertz coded-aperture imaging (PTCAI) method that simplifies hardware while maintaining high-resolution imaging. Using an incoherent detection array further boosts imaging speed.

Keywords:
coded-aperture imagingincoherent detectionphase retrievalphaseless imagingterahertz

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Area of Science:

  • Optics and Photonics
  • Imaging Science
  • Terahertz Technology

Background:

  • Traditional terahertz imaging systems often require complex hardware and can be limited by speed.
  • Phase retrieval is crucial for reconstructing high-resolution images but poses challenges in terahertz applications.

Purpose of the Study:

  • To develop a simplified and efficient phaseless terahertz coded-aperture imaging (PTCAI) method.
  • To enable high-resolution terahertz imaging using incoherent detectors.
  • To enhance imaging frame rates through optimized detection strategies.

Main Methods:

  • Modeling the system architecture and deriving the matrix imaging equation for PTCAI.
  • Investigating phase retrieval techniques for target reconstruction.
  • Utilizing single incoherent detectors and incoherent detection arrays.

Main Results:

  • The proposed PTCAI method significantly reduces system complexity in the receiving process.
  • High-resolution imaging capability is maintained.
  • Employing an incoherent detection array decreases encoding and sampling times, improving the imaging frame rate.

Conclusions:

  • The developed PTCAI method offers a promising approach for simplified, high-resolution terahertz imaging.
  • Incoherent detection arrays enhance imaging speed, paving the way for near real-time applications.
  • Future work will focus on experimental validation and achieving high-speed PTCAI.