chanelink logo
CHANELINK
English

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

480
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

  • A new approach to 3D printing has been published in a Nature journal

    In the last century, the improvement of mechanical properties of structural metals was mainly achieved through the creation of increasingly complex chemical compositions. The complexity of this ingredient increases costs, creates supply fragility, and makes recycling more complex.As a relatively new metal processing technology, metal 3D printing provides the possibility to re-examine and simplify ...

    2024-11-29
    See translation

  • New super-resolution microscopy imaging technology: rapid imaging of neurons

    The research group led by Wang Kai from the Center for Excellence in Brain Science and Intelligent Technology of the Chinese Academy of Sciences has published a research paper titled "Super solution imaging of fast morphological dynamics of neurons in eating animals" online in Nature Methods. The team has developed a new type of super-resolution microscopy imaging technology, which solves the two ...

    2024-12-04
    See translation

  • Xi'an Institute of Optics and Fine Mechanics has made new progress in the field of metasurface nonlinear photonics

    Recently, the Research Group of Nonlinear Photonics Technology and Applications in the State Key Laboratory of Transient Optics and Photonics Technology of Xi'an Institute of Optics and Fine Mechanics has made important progress in the field of super surface nonlinear photonics. Relevant research results were published in the internationally famous journal Nanoscale Horizons. The first author of t...

    2024-09-27
    See translation

  • Researchers have captured the strange behavior of laser induced gold

    A new study conducted by the US Department of Energy's SLAC National Accelerator Laboratory has revealed the strange behavior of gold when impacted by high-energy laser pulses.When certain materials are subjected to strong laser excitation, they will quickly disintegrate. But gold is exactly the opposite: it becomes more resilient and resilient. This is because the way gold atoms vibrate together ...

    2024-02-17
    See translation

  • Korean researchers use laser ablation to create deformable micro supercapacitors

    Recently, a research team from the Korea Institute of Industrial Technology and POSTECH University successfully utilized laser sintering pattern technology to create a deformable micro supercapacitor (MSCs), specifically designed to provide energy storage solutions for soft electronic devices. This breakthrough meets the urgent need for efficient energy storage systems in stretchable devices in...

    2024-05-30
    See translation