chanelink logo
CHANELINK
English

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

1087
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

  • Xi'an Institute of Optics and Fine Mechanics has made progress in the field of integrated microcavity optical frequency comb

    Recently, researcher Zhang Wenfu from the National Key Laboratory of Ultrafast Optical Science and Technology of Xi'an Institute of Optics and Mechanics, researcher Chen Wei from the academician team of Guo Guangcan from the Key Laboratory of Quantum Information of the Chinese Academy of Sciences of the University of Science and Technology of China, and professor Yang Jun from the School of Intell...

    02-19
    See translation

  • The United States has successfully developed a full 3D printed electric spray engine

    The fully 3D printed electric spray engine is suitable for small satellite in orbit maneuver, and its production cost is only a small part of that of traditional thrusters.Image source: Massachusetts Institute of Technology, USAThe Massachusetts Institute of Technology team recently demonstrated an electric spray engine made entirely of 3D printing technology, which can be propelled by emitting ...

    02-20
    See translation

  • Xi'an Institute of Optics and Fine Mechanics: New progress in large field two-photon scattering microscopy imaging technology

    Adaptive optics is a technique that improves imaging quality by correcting wavefront distortion. Interference focus sensing (IFS), as a new method proposed in the field of adaptive optics in recent years, has been proven to have significant effects in correcting complex aberrations in deep tissue imaging. This technology is based on measuring a single location within the sample to determine the ca...

    04-15
    See translation

  • AWOL Vision will showcase cutting-edge laser projectors and award-winning innovations at CEDIA 2023

    AWOL Vision has announced that it will be showcasing the latest innovations in home entertainment at this year's CEDIA Expo in Denver, Colorado from September 7-9.At the show, AWOL Vision will debut the new LVV-3000 Pro and LVV-3500 Pro laser projectors with Dolby Vision and Control4 integration, and will showcase the latest Vanish TV, The TV recently received the prestigious "IFA 2023 Best of the...

    2023-09-08
    See translation

  • The UK government plans £ 10.5 million to support laser wire feeding

    On the first day of the 2025 Paris Air Show, the UK government announced a £ 250 million investment to support sustainable aerospace programs, with £ 48.5 million earmarked for funding additive manufacturing projects led by Airbus and GKN Aerospace. Among them, £ 10.5 million will be injected into the GKN Integrated System Level Aerospace Structure Assembly (ISLAA) program, with the aim of utilizi...

    06-23
    See translation