chanelink logo
CHANELINK
English

Fiber laser array for single pixel imaging is expected to achieve remote detection

62
2024-05-15 14:14:21
See translation

Single pixel imaging (SPI) is a novel computational imaging technique that has been widely studied in recent years. This technology only uses single pixel detectors without spatial resolution to obtain spatial information of targets.

It has unique advantages and compensates for the shortcomings of traditional imaging technologies based on array detectors, such as relatively immature or expensive array detectors in remote sensing and non visible light imaging.

The imaging speed of SPI is always limited by the refresh rate of the spatial light modulator. For example, a typical digital micro mirror device (DMD) has a maximum refresh rate of 22kHz in binary mode. This limitation makes the implementation of real-time SPI difficult.

Researchers led by Professor Han Kai from the University of National Defense Technology of China (NUDT) are interested in single pixel imaging and fiber laser arrays. They proposed an effective SPI scheme using a phased fiber laser array and an untrained deep neural network.

Their research on efficient single pixel imaging based on compact fiber laser arrays and untrained neural networks is published in Frontiers of Optoelectronics.

Fiber lasers are arranged in a compact hexagonal structure and coherently combined to generate an illumination light field. By utilizing high-speed electro-optic modulators in each individual fiber laser module, randomly modulated fiber laser arrays can quickly project speckle onto objects of interest.

In addition, incorporating untrained deep neural networks into the image reconstruction process to improve the quality of reconstructed images.
Given its high transmission power (~kW) and potential for fast modulation (~MHz), researchers predict that the SPI scheme is expected to be applied in remote sensing and object detection.

Source: Laser Net

Related Recommendations

  • Researchers have discovered new multiphoton effects in quantum interference of light

    An international research team from Leibniz University in Hanover and Strathclyde University in Glasgow overturned the previous hypothesis about the influence of multiphoton components in the thermal field and the interference effect of parameterized single photons. The journal Physical Review Letters published the team's research."We have demonstrated through experiments that the interference eff...

    2024-01-24
    See translation

  • MIT researchers have demonstrated a novel chip based resin 3D printer

    Researchers from the Massachusetts Institute of Technology and the University of Texas at Austin showcased the first chip based resin 3D printer. Their concept verification tool consists of a millimeter sized photon chip that emits a programmable beam of light into resin holes, which solidify into a solid structure when exposed to light.The prototype processor does not have mobile components, but ...

    2024-06-17
    See translation

  • DustPhotonic is the first to develop an 800G silicon photonic chip

    Recently, DustPhotonics released a single chip 800G-DR8 silicon photonic chip for data center applications, which is an important milestone in practical photonics in data centers. The company claims that its single-chip solution provides high-performance and easy to implement solutions for system architects.DustPhotonics' 800G-DR8 photonic integrated circuit provides a single chip solution for fib...

    2023-10-13
    See translation

  • Tongkuai will launch a fully automatic laser drilling machine for interconnected manufacturing equipped with a 6-kilowatt fiber laser

    TRUMPF introduced its TruMatic 5000 manufacturing unit and new SheetMaster automatic loading and unloading device technology at the 2023 Blechexpo Metal Plate Processing Exhibition in Stuttgart, Germany.Users of the new system will benefit from fully automatic laser cutting, punching, and forming capabilities. The new SheetMaster device can achieve fully automated material flow within the manufact...

    2023-10-23
    See translation

  • A research team at City University of Hong Kong has developed a multispectral, ultra-low dose photoacoustic microscope system

    Optical resolution "photoacoustic microscope is a new biomedical imaging technology, which can be used in the research of cancer, diabetes, stroke and other diseases. However, insufficient sensitivity has always been a long-term obstacle to its wider application.According to Maims Consulting, a research team from City University of Hong Kong (CityU) has recently developed a multispectral, ultra-lo...

    2023-09-21
    See translation