Single-pixel terahertz imaging based on spatial Fourier spectrum

  title={Single-pixel terahertz imaging based on spatial Fourier spectrum},
  author={Rongbin She and Wenquan Liu and Yuanfu Lu and Zhisheng Zhou and Guangyuan Li},
  journal={arXiv: Applied Physics},
We propose and demonstrate single-pixel terahertz imaging based on spatial Fourier spectrum (SFS). The concept and the operation principle of this novel approach are introduced by comparing with the conventional compressing sensing (CS) approach, clarifying their similarities and differences. By doing this, we find that these two different approaches can share the same photo-induced coded aperture setup, facilitating their direct comparisons. Our results show that, compared with the CS approach… 

Figures from this paper

Compressed ultrahigh-speed single-pixel imaging by swept aggregate patterns

Single-pixel imaging (SPI) has emerged as a powerful technique that uses coded wide-field illumination with sampling by a single-point detector. Most SPI systems are limited by the refresh rates of

Advances on terahertz single-pixel imaging

Single-pixel imaging is a novel imaging technique that can obtain image information through a single-pixel detector. It can effectively avoid the problem of lack of high-quality area array detectors

Image-free real-time detection and tracking of fast moving object using a single-pixel detector.

An image-free and cost-effective method for detecting and tracking a fast moving object in real time and for long duration and uses Fourier basis patterns to illuminate the target moving object and collects the resulting light signal with a single-pixel detector.



Terahertz compressive imaging with metamaterial spatial light modulators

Active metamaterials have been used to realize terahertz imaging with a single-pixel detector. Compressive techniques permit high-fidelity images to be acquired at high frame rates. The technique

A single-pixel terahertz imaging system based on compressed sensing

We describe a terahertz imaging system that uses a single pixel detector in combination with a series of random masks to enable high-speed image acquisition. The image formation is based on the

Approaching real-time terahertz imaging with photo-induced coded apertures and compressed sensing

Photo-induced coded-aperture imaging (PI-CAI) based on compressed sensing (CS) at 590 GHz using a WR-1.5 (500-750 GHz) vector network analyser is demonstrated. For a 256-pixel (16 × 16) frame, the

Compressed Sensing in a Fully Non-Mechanical 350 GHz Imaging Setting

We investigate a single-pixel camera (SPC) that relies on non-mechanical scanning with a terahertz (THz) spatial light modulator (SLM) and Compressed Sensing (CS) for image generation. The camera is

Noninvasive, near-field terahertz imaging of hidden objects using a single-pixel detector

Noninvasive, near-field THz imaging with subwavelength resolution and the inherent sensitivity to local conductivity is demonstrated, making it possible to detect fissures in the circuitry wiring of a few micrometers in size.

Single-pixel imaging by means of Fourier spectrum acquisition

A single-pixel imaging technique that can achieve high-quality images by acquiring their Fourier spectrum by using phase-shifting sinusoid structured illumination for the spectrum acquisition and applying inverse Fourier transform to the obtained spectrum yields the desired image.

Coded-Aperture Imaging Using Photo-Induced Reconfigurable Aperture Arrays for Mapping Terahertz Beams

We report terahertz coded-aperture imaging using photo-induced reconfigurable aperture arrays on a silicon wafer. The coded aperture was implemented using programmable illumination from a

Imaging with terahertz radiation

Within the last several years, the field of terahertz science and technology has changed dramatically. Many new advances in the technology for generation, manipulation, and detection of terahertz

Compressed sensing with near-field THz radiation

We demonstrate a form of near-field terahertz (THz) imaging that is compatible with compressed sensing algorithms. By spatially photomodulating THz pulses using a set of shaped binary optical

Integrated Terahertz Graphene Modulator with 100% Modulation Depth

Terahertz (THz) frequency technology has many potential applications in nondestructive imaging, spectroscopic sensing, and high-bit-rate free-space communications, with an optical modulator being a